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Efficient arbitrary simultaneously entangling gates on a trapped-ion quantum computer.

ABSTRACT: Efficiently entangling pairs of qubits is essential to fully harness the power of quantum computing. Here, we devise an exact protocol that simultaneously entangles arbitrary pairs of qubits on a trapped-ion quantum computer. The protocol requires classical computational resources polynomial in the system size, and very little overhead in the quantum control compared to a single-pair case. We demonstrate an exponential improvement in both classical and quantum resources over the current state of the art. We implement the protocol on a software-defined trapped-ion quantum computer, where we reconfigure the quantum computer architecture on demand. Our protocol may also be extended to a wide variety of other quantum computing platforms.

SUBMITTER: Grzesiak N

PROVIDER: S-EPMC7289877 | biostudies-literature | 2020 Jun

REPOSITORIES: biostudies-literature

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Efficient arbitrary simultaneously entangling gates on a trapped-ion quantum computer.

Grzesiak Nikodem N Blümel Reinhold R Wright Kenneth K Beck Kristin M KM Pisenti Neal C NC Li Ming M Chaplin Vandiver V Amini Jason M JM Debnath Shantanu S Chen Jwo-Sy JS Nam Yunseong Y

Nature communications 20200611 1

Efficiently entangling pairs of qubits is essential to fully harness the power of quantum computing. Here, we devise an exact protocol that simultaneously entangles arbitrary pairs of qubits on a trapped-ion quantum computer. The protocol requires classical computational resources polynomial in the system size, and very little overhead in the quantum control compared to a single-pair case. We demonstrate an exponential improvement in both classical and quantum resources over the current state of ...[more]

PMID: 32528164

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