Quantum error correction of spin quantum memories in diamond under a zero magnetic field

Author:

Nakazato Takaya,Reyes RaustinORCID,Imaike Nobuaki,Matsuda Kazuyasu,Tsurumoto Kazuya,Sekiguchi Yuhei,Kosaka HideoORCID

Abstract

AbstractFault-tolerant quantum memory plays a key role in interfacing quantum computers with quantum networks to construct quantum computer networks. Manipulation of spin quantum memory generally requires a magnetic field, which hinders the integration with superconducting qubits. Completely zero-field operation is desirable for scaling up a quantum computer based on superconducting qubits. Here we demonstrate quantum error correction to protect the nuclear spin of the nitrogen as a quantum memory in a diamond nitrogen-vacancy center with two nuclear spins of the surrounding carbon isotopes under a zero magnetic field. The quantum error correction makes quantum memory resilient against operational or environmental errors without the need for magnetic fields and opens a way toward distributed quantum computation and a quantum internet with memory-based quantum interfaces or quantum repeaters.

Funder

MEXT | Japan Society for the Promotion of Science

MEXT | Japan Science and Technology Agency

Ministry of Internal Affairs and Communications

Publisher

Springer Science and Business Media LLC

Subject

General Physics and Astronomy

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