TY  - JOUR
AU  - Fuchs, G. D.
AU  - Burkard, G.
AU  - Klimov, P. V.
AU  - Awschalom, D. D.
PY  - 2011
DA  - 2011//
TI  - A quantum memory intrinsic to single nitrogen–vacancy centres in diamond
T2  - Nat. Phys.
JO  - Nature Physics
SP  - 789
EP  - 793
VL  - 7
IS  - 10
KW  - fromIPMRAS
AB  - A quantum memory, composed of a long-lived qubit coupled to each processing qubit, is important to building a scalable platform for quantum information science. These two qubits should be connected by a fast and high-fidelity operation to store and retrieve coherent quantum states. Here, we demonstrate a room-temperature quantum memory based on the spin of the nitrogen nucleus intrinsic to each nitrogen–vacancy (NV) centre in diamond. We perform coherent storage of a single NV centre electronic spin in a single nitrogen nuclear spin using Landau–Zener transitions across a hyperfine-mediated avoided level crossing. By working outside the asymptotic regime, we demonstrate coherent state transfer in as little as 120 ns with total storage fidelity of 88±6%. This work demonstrates the use of a quantum memory that is compatible with scaling as the nitrogen nucleus is deterministically present in each NV centre defect.
N1  - exported from refbase (https://db.rplab.ru/refbase/show.php?record=823), last updated on Sat, 12 May 2012 15:07:11 -0500
ID  - Fuchs_etal2011
ER  -