Generation of N-body entangling interactions between qubits
AssigneeDuke University
InventorsChristopher Monroe, Or Katz, Marko Cetina
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Abstract
Systems and methods for producing N-body entangling interactions to simplify n-gate operations in quantum computing applications are disclosed herein. According to at least some embodiments, an oscillator generates a two-tone field tuned to qubit resonance, first upper motion-induced sidebands, first lower motion-induced sidebands, second upper motion-induced sidebands, and second lower motion-induced sidebands.
Claims19
A method for generating an N-body entangling interaction between qubits in a quantum computing system, comprising:
- configuring one or more parameters for each of a plurality of pulses to be individually applied to a plurality of target ions in a chain of trapped ions as a series of displacement operations and qubit state-dependent squeezing operations on each of the target ions, each of the trapped ions in the chain defining one of the qubits of the quantum computing system, wherein each of the displacement operations and the qubit state-dependent squeezing operations occur in a specified sequence;
- generating, based on the one or more parameters, each of the plurality of pulses;
- and
- applying the generated pulses to the plurality of target ions to create an entanglement interaction between the target ions.
A method for generating an N-body entangling interaction between two or more target qubits of a plurality of qubits in a quantum computing system, comprising:
- generating, by an oscillator of the computing system and for each target, a plurality of a single-tone or multi-tone fields, a first field driving the qubit between its quantum states, a second field driving the motion of the qubit, a third field driving first motional sidebands of the qubit, and a fourth field driving second motional sidebands of the qubit to apply a series of displacement forces and qubit state-dependent squeezing forces on the qubit to entangle the qubit with the other target qubits.
A quantum computing system, comprising:
- one or more processors;
- a chain of trapped ions, each of the trapped ions defining a qubit;
- one or more lasers configured to emit a laser beam that is split into two or more non-copropagating laser beams which are provided to each of the trapped ions;
- a controller comprising memory storing program code, which, when executed by the one or more processors, causes the quantum computing system to:
- configure one or more parameters for each of a plurality of pulses to be individually applied to a plurality of target ions in a chain of trapped ions as a series of displacement operations and qubit state-dependent squeezing operations on each of the target ions, each of the trapped ions in the chain defining one of the qubits of the quantum computing system;
- generate, based on the one or more parameters, each of the plurality of pulses;
- and
- apply the generated pulses to the plurality of target ions to create an entanglement interaction between the target ions.
Dependencies are inferred from the claim text.