In a quantum computer, quantum algorithms are performed by a qubit interacting with multiple quantum control pulses. The quantum control pulses are electromagnetic RF signals that are generated digitally at baseband and sent, via asynchronous ports, to DACs that feed an RF upconversion circuit. For synchronization, each asynchronous port is coupled to a multi-tap delay line. The setting of the multi-tap delay line is determined by a function of the port's setup-and-hold time. This function is trained, via machine learning, to be applicable across a variety of ports.
Disclosed herein is a new system and method for loading quantum processor programs. Pulse processors are programmed, in real-time, according to a low-level instruction set to produce microwave pulses that manipulate the states in a quantum processor. The nature of qubits in the quantum processor causes quantum hardware characteristics to drift over time. These qubits undergo small physical changes that may damage the accuracy of the quantum gates, typically due to variation of temperature, or energy in the quantum hardware. This new system and method for loading quantum processor programs enables qubit calibration and the adjustment of the quantum hardware in real-time according to immediate feedback from one program to another.
G06N 10/80 - Quantum programming, e.g. interfaces, languages or software-development kits for creating or handling programs capable of running on quantum computersPlatforms for simulating or accessing quantum computers, e.g. cloud-based quantum computing
A system comprises pulse program compiler circuitry operable to analyze a pulse program that includes a pulse operation statement, and to generate, based on the pulse program, machine code that, if loaded into a pulse generation and measurement circuit, configures the pulse generation and measurement circuit to generate one or more pulses and/or process one or more received pulses. The pulse operation statement may specify a first pulse to be generated, and a target of the first pulse. The pulse operation statement may specify parameters to be used for processing of a return signal resulting from transmission of the first pulse. The pulse operation statement may specify an expression to be used for processing of the first pulse by the pulse generation and measurement circuit before the pulse generation and measurement circuit sends the first pulse to the target.
H03K 3/38 - Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of superconductive devices
G06N 3/04 - Architecture, e.g. interconnection topology
G06N 10/00 - Quantum computing, i.e. information processing based on quantum-mechanical phenomena
H03K 19/195 - Logic circuits, i.e. having at least two inputs acting on one outputInverting circuits using specified components using superconductive devices
A system comprises pulse generation and measurement circuitry comprising a plurality of pulse generator circuits and a plurality of ports, and management circuitry. The management circuitry is operable to analyze a specification of a controlled system and controlled elements that comprises a definition of a controlled element of the control system, and a definition of one or more pulses available for transmission by the control system. The management circuitry is operable to configure, based on the specification, the pulse generation and measurement circuitry to: generate the one or more pulses via one or more of the plurality of pulse generator circuits; and output the one or more pulses to the controlled element via one or more of the plurality of ports.
H03K 3/38 - Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of superconductive devices
G06N 3/04 - Architecture, e.g. interconnection topology
G06N 10/00 - Quantum computing, i.e. information processing based on quantum-mechanical phenomena
H03K 19/195 - Logic circuits, i.e. having at least two inputs acting on one outputInverting circuits using specified components using superconductive devices
A system comprises pulse program compiler circuitry operable to analyze a pulse program that includes a pulse operation statement, and to generate, based on the pulse program, machine code that, if loaded into a pulse generation and measurement circuit, configures the pulse generation and measurement circuit to generate one or more pulses and/or process one or more received pulses. The pulse operation statement may specify a first pulse to be generated, and a target of the first pulse. The pulse operation statement may specify parameters to be used for processing of a return signal resulting from transmission of the first pulse. The pulse operation statement may specify an expression to be used for processing of the first pulse by the pulse generation and measurement circuit before the pulse generation and measurement circuit sends the first pulse to the target.
H03K 3/38 - Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of superconductive devices
G06N 3/04 - Architecture, e.g. interconnection topology
G06N 10/00 - Quantum computing, i.e. information processing based on quantum-mechanical phenomena
H03K 19/195 - Logic circuits, i.e. having at least two inputs acting on one outputInverting circuits using specified components using superconductive devices
A system comprises pulse program compiler circuitry operable to analyze a pulse program that includes a pulse operation statement, and to generate, based on the pulse program, machine code that, if loaded into a pulse generation and measurement circuit, configures the pulse generation and measurement circuit to generate one or more pulses and/or process one or more received pulses. The pulse operation statement may specify a first pulse to be generated, and a target of the first pulse. The pulse operation statement may specify parameters to be used for processing of a return signal resulting from transmission of the first pulse. The pulse operation statement may specify an expression to be used for processing of the first pulse by the pulse generation and measurement circuit before the pulse generation and measurement circuit sends the first pulse to the target.
H03K 3/38 - Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of superconductive devices
G06N 3/04 - Architecture, e.g. interconnection topology
G06N 10/00 - Quantum computing, i.e. information processing based on quantum-mechanical phenomena
H03K 19/195 - Logic circuits, i.e. having at least two inputs acting on one outputInverting circuits using specified components using superconductive devices
7.
SYSTEM AND METHOD FOR CLOCK SYNCHRONIZATION AND TIME TRANSFER BETWEEN QUANTUM ORCHESTRATION PLATFORM ELEMENTS
A quantum orchestration platform (QOP) comprises a collection of processing units and analog components that produce synchronized analog pulses, readouts, and computations that may be used for operations with qubits. All processing units of the QOP are synchronized with minimal skew via time processing over one or more sync cables that interconnect the processing units.
A feedback controller is provided to generate a quantum feedback operation to control one or more ancilla qubits in a quantum error correcting code. The quantum feedback operation is based on the measurement of the one or more ancilla qubits. The feedback controller is operable to dynamically adjust a state discrimination according to previous measurements of the one or more ancilla qubits.
A distributed plurality of quantum controllers operate synchronously on shared data. The operations performed in each quantum controller may be non-deterministic and based on a dynamic instruction indication. The shared data may be based on results from all of the plurality of quantum controllers.
A set of quantum controllers are operable to transmit quantum state data to a quantum control switch. The quantum control switch comprises vector processors that operate on the quantum state data from the set of quantum controllers. Each vector processor transmits a result of the operation to a corresponding quantum controller in the set of quantum controllers.
A channel between quantum controller modules (e.g., pulse processors) is operable to communicate high speed data required for processing qubit states that may be distributed across a quantum computer. The latency of the communication channel is deterministic and controllable according to a system clock domain.
A pulse generation circuit in a quantum controller operates synchronously with a pulse computation circuit. The pulse generation circuit generates a pulse associated with a quantum element operation. The pulse computation circuit is able to determine characteristics of a signal that is based on the pulse. These characteristics are used by the pulse generation circuit to modify the pulse.
A system comprises quantum control interconnect circuitry configured to receive a plurality of fixed-frequency signals, a variable-frequency signal, a quantum control pulse, a quantum element readout pulse, and a quantum element return pulse. The circuitry is operable to upconvert the quantum control pulse using the fixed-frequency signals. The circuitry is operable to upconvert the readout pulse using the variable-frequency signal. The circuitry is operable to downconvert the return pulse using the variable-frequency signal.
G06N 10/00 - Quantum computing, i.e. information processing based on quantum-mechanical phenomena
H03K 19/195 - Logic circuits, i.e. having at least two inputs acting on one outputInverting circuits using specified components using superconductive devices
H03K 3/38 - Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of superconductive devices
H03L 7/099 - Details of the phase-locked loop concerning mainly the controlled oscillator of the loop
A system comprises pulse program compiler circuitry operable to analyze a pulse program that includes a pulse operation statement, and to generate, based on the pulse program, machine code that, if loaded into a pulse generation and measurement circuit, configures the pulse generation and measurement circuit to generate one or more pulses and/or process one or more received pulses. The pulse operation statement may specify a first pulse to be generated, and a target of the first pulse. The pulse operation statement may specify parameters to be used for processing of a return signal resulting from transmission of the first pulse. The pulse operation statement may specify an expression to be used for processing of the first pulse by the pulse generation and measurement circuit before the pulse generation and measurement circuit sends the first pulse to the target.
H03K 3/38 - Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of superconductive devices
G06N 3/04 - Architecture, e.g. interconnection topology
G06N 10/00 - Quantum computing, i.e. information processing based on quantum-mechanical phenomena
H03K 19/195 - Logic circuits, i.e. having at least two inputs acting on one outputInverting circuits using specified components using superconductive devices
15.
CONCURRENT RESULTS PROCESSING IN A QUANTUM CONTROL SYSTEM
Circuitry of a pulse generation program compiler is operable to parse pulse generation program source code comprising a declaration of a non-stream variable, a declaration of a stream variable, and one or more stream processing statements that reference the stream variable. The circuitry of the pulse generation program compiler is operable to generate, based on the declaration of the non-stream variable, machine for execution by a quantum controller and a quantum orchestration server.
A system comprising a quantum control data exchange circuit that enables a large, variable number of pulse generation circuits to exchange data within the coherence time of a plurality of quantum elements to enable feedback-based quantum control of a large, variable number of quantum elements.
G06N 10/00 - Quantum computing, i.e. information processing based on quantum-mechanical phenomena
H03K 3/02 - Generators characterised by the type of circuit or by the means used for producing pulses
H03K 3/38 - Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of superconductive devices
Methods and systems for classical processing in a quantum controller are operable to receive data from a quantum processor and demodulate a feedback pulse according to a command, a vector of digital samples and a vector of quadrature reference inputs. The vector of digital samples correspond to a feedback pulse from the quantum processor at a first time, and the vector of quadrature reference inputs correspond to a phase and a frequency at a second time. Exemplary embodiments of the methods and systems for classical processing in the quantum controller are also operable to perform one or more ALU, CLU, Boolean and multiplication operations in parallel with demodulation.
G06N 10/00 - Quantum computing, i.e. information processing based on quantum-mechanical phenomena
H03K 19/195 - Logic circuits, i.e. having at least two inputs acting on one outputInverting circuits using specified components using superconductive devices
H03K 3/00 - Circuits for generating electric pulsesMonostable, bistable or multistable circuits
A system comprises pulse program compiler circuitry operable to analyze a pulse program that includes a pulse operation statement, and to generate, based on the pulse program, machine code that, if loaded into a pulse generation and measurement circuit, configures the pulse generation and measurement circuit to generate one or more pulses and/or process one or more received pulses. The pulse operation statement may specify a first pulse to be generated, and a target of the first pulse. The pulse operation statement may specify parameters to be used for processing of a return signal resulting from transmission of the first pulse. The pulse operation statement may specify an expression to be used for processing of the first pulse by the pulse generation and measurement circuit before the pulse generation and measurement circuit sends the first pulse to the target.
A system comprises pulse generation and measurement circuitry comprising a plurality of pulse generator circuits and a plurality of ports, and management circuitry. The management circuitry is operable to analyze a specification of a controlled system and controlled elements that comprises a definition of a controlled element of the control system, and a definition of one or more pulses available for transmission by the control system. The management circuitry is operable to configure, based on the specification, the pulse generation and measurement circuitry to: generate the one or more pulses via one or more of the plurality of pulse generator circuits; and output the one or more pulses to the controlled element via one or more of the plurality of ports.
A quantum controller comprises quantum control pulse generation circuitry, signal generation circuitry, and phase parameter generation circuitry. The phase parameter generation circuitry is operable to determine, based on an output of the time-tracking circuitry, a first value of a phase parameter to be used for generation of an oscillating signal. The signal generation circuitry is operable to, at a first time instant, begin generation of the oscillating signal at a first frequency for modulation of a first of the two quantum control pulses, and, at a second time instant, generate the oscillating signal at a second frequency, wherein the phase of the oscillating signal at the second time instant is determined by the value of the phase parameter such that the phase of the oscillating signal is as it would have been if the oscillating signal had been oscillating at the second frequency continuously since a reference time.
A quantum controller comprises a quantum control pulse generation circuit and digital signal management circuit. The quantum control pulse generation circuit is operable to generate a quantum control pulse which can be processed by any of a plurality of controlled circuits, and generate a first digital signal which can be routed to any of the plurality of controlled circuits. The digital signal management circuit is operable to detect, during runtime, to which one or more of the plurality of controlled circuits the first digital signal is to be routed, to manipulate the first digital signal based on the one or more of the plurality of controlled circuits to which the first digital signal is to be routed, where the manipulation results in one or more manipulated digital signals, and to route the one or more manipulated digital signals to one or more of the plurality of controlled circuits.
H03K 19/195 - Logic circuits, i.e. having at least two inputs acting on one outputInverting circuits using specified components using superconductive devices
G06F 13/36 - Handling requests for interconnection or transfer for access to common bus or bus system
22.
SYNCHRONIZATION IN A QUANTUM CONTROLLER WITH MODULAR AND DYNAMIC PULSE GENERATION AND ROUTING
A quantum controller comprises a first quantum control pulse generation circuit and a second quantum control pulse generation circuit. The first quantum control pulse generation circuit and a second quantum control pulse generation circuit are operable to operate asynchronously during some time intervals of a quantum algorithm and synchronously during other time intervals of the quantum algorithm.
G06N 10/00 - Quantum computing, i.e. information processing based on quantum-mechanical phenomena
H04B 10/079 - Arrangements for monitoring or testing transmission systemsArrangements for fault measurement of transmission systems using an in-service signal using measurements of the data signal
A quantum controller comprises a first outbound quantum control pulse generation circuit, a second outbound quantum control pulse generation circuit, and an outbound quantum control pulse modification circuit. The first outbound quantum control pulse generation circuit is operable to generate a first raw outbound quantum control pulse. The second outbound quantum control pulse generation circuit operable to generate a second raw outbound quantum control pulse. The outbound quantum control pulse modification circuit is operable to dynamically determine whether to process the first raw outbound quantum control pulse and the second outbound quantum control pulse as a multi-pulse pair or as two independent pulses. The determination of may be based on to which one or more quantum elements and/or signal paths the first raw outbound quantum control pulse and the second raw outbound quantum control pulse are to be routed.
G06N 10/00 - Quantum computing, i.e. information processing based on quantum-mechanical phenomena
H03K 3/02 - Generators characterised by the type of circuit or by the means used for producing pulses
H03K 3/08 - Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of vacuum tubes only, with positive feedback using means other than a transformer for feedback using at least two tubes so coupled that the input of one is derived from the output of another, e.g. multivibrator astable
24.
QUANTUM CONTROLLER WITH MODULAR AND DYNAMIC PULSE GENERATION AND ROUTING
A quantum controller comprises raw pulse generation circuitry, pulse modification circuitry, and output management circuitry. The raw pulse generation circuitry is operable to generate a raw output pulse. The output management circuitry is operable to route one or more output pulses onto a selected one or more signal paths based on to which one or more of a plurality of elements of a quantum processor the one or more output pulses are to be sent. The pulse modification circuitry is operable to select pulse modification settings to use for processing of the raw output pulse, wherein the selection is based on which of the signal paths are selected and/or to which elements of a quantum processor the pulses are to be sent. The pulse modification circuitry is operable to process the raw pulse using the selected pulse modification settings to generate the output pulses.
G06N 10/00 - Quantum computing, i.e. information processing based on quantum-mechanical phenomena
H03K 3/02 - Generators characterised by the type of circuit or by the means used for producing pulses
H03K 3/38 - Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of superconductive devices
patents
