Entanglement of two distant nitrogen-vacancy-center ensembles under the action of squeezed microwave field

被引：0

作者：

Teper, N. ^{[1
,2
]}

Mbenza, L. N. ^{[1
]}

Sinayskiy, T. ^{[1
,2
]}

Petruccione, F. ^{[1
,2
]}

机构：

[1] Univ KwaZulu Natal, Sch Chem & Phys, Durban, South Africa

[2] Natl Inst Theoret Phys NITheP, Kwa Zulu, South Africa

来源：

PROCEEDINGS OF SAIP2014: THE 59TH ANNUAL CONFERENCE OF THE SOUTH AFRICAN INSTITUTE OF PHYSICS | 2014年

关键词：

NUCLEAR-SPIN QUBITS; DIAMOND; DYNAMICS; SYSTEMS; READOUT;

D O I：

暂无

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We consider a circuit consisting of two distant nitrogen-vacancy-center ensembles coupled to separate transmission line resonators, which interact by means of a current biased Josephson junction. Our investigation is focused on transitions and dissipation in the Josephson junction leading to entanglement. In our approach the Josephson junction is regarded as a reservoir, whose variables are eliminated from the system dynamics. We include in this scheme also superconducting quantum interference devices, flux-driven Josephson parametric amplifiers, which are the sources of a squeezed microwave field. The entanglement was studied in terms of the logarithmic negativity. The logarithmic negativity was considered for different regimes: weak coupling and strong coupling of transitions of the Josephson junction, and under action of squeezed microwave fields. We show that different degrees, time and duration of entanglement can be reached for various parameters choices.

引用

页码：637 / 642

页数：6

共 18 条

[1] Spin-Light Coherence for Single-Spin Measurement and Control in Diamond [J].

Buckley, B. B. ;

Fuchs, G. D. ;

Bassett, L. C. ;

Awschalom, D. D. .

SCIENCE, 2010, 330 (6008) :1212-1215

[2] Coherent dynamics of coupled electron and nuclear spin qubits in diamond [J].

Childress, L. ;

Dutt, M. V. Gurudev ;

Taylor, J. M. ;

Zibrov, A. S. ;

Jelezko, F. ;

Wrachtrup, J. ;

Hemmer, P. R. ;

Lukin, M. D. .

SCIENCE, 2006, 314 (5797) :281-285

[3] Quantum register based on individual electronic and nuclear spin qubits in diamond [J].

Gurudev Dutt, M. V. ;

Childress, L. ;

Jiang, L. ;

Togan, E. ;

Maze, J. ;

Jelezko, F. ;

Zibrov, A. S. ;

Hemmer, P. R. ;

Lukin, M. D. .

SCIENCE, 2007, 316 (5829) :1312-1316

[4] Controllable coupling of superconducting transmission-line resonators [J].

Hu, Yong ;

Xiao, Yun-Feng ;

Zhou, Zheng-Wei ;

Guo, Guang-Can .

PHYSICAL REVIEW A, 2007, 75 (01)

[5] Repetitive Readout of a Single Electronic Spin via Quantum Logic with Nuclear Spin Ancillae [J].

Jiang, L. ;

Hodges, J. S. ;

Maze, J. R. ;

Maurer, P. ;

Taylor, J. M. ;

Cory, D. G. ;

Hemmer, P. R. ;

Walsworth, R. L. ;

Yacoby, A. ;

Zibrov, A. S. ;

Lukin, M. D. .

SCIENCE, 2009, 326 (5950) :267-272

[6] Storage and retrieval of a microwave field in a spin ensemble [J].

Kubo, Y. ;

Diniz, I. ;

Dewes, A. ;

Jacques, V. ;

Dreau, A. ;

Roch, J. -F. ;

Auffeves, A. ;

Vion, D. ;

Esteve, D. ;

Bertet, P. .

PHYSICAL REVIEW A, 2012, 85 (01)

[7] Quantum memory using a hybrid circuit with flux qubits and nitrogen-vacancy centers [J].

Lu, Xin-You ;

Xiang, Ze-Liang ;

Cui, Wei ;

You, J. Q. ;

Nori, Franco .

PHYSICAL REVIEW A, 2013, 88 (01)

[8] Rabi oscillations in a large Josephson-junction qubit [J].

Martinis, JM ;

Nam, S ;

Aumentado, J ;

Urbina, C .

PHYSICAL REVIEW LETTERS, 2002, 89 (11) :1-117901

[9] Single-Shot Readout of a Single Nuclear Spin [J].

Neumann, Philipp ;

Beck, Johannes ;

Steiner, Matthias ;

Rempp, Florian ;

Fedder, Helmut ;

Hemmer, Philip R. ;

Wrachtrup, Joerg ;

Jelezko, Fedor .

SCIENCE, 2010, 329 (5991) :542-544

[10] Possible scheme for on-chip element for squeezed microwave generation [J].

Ojanen, T. ;

Salo, J. .

PHYSICAL REVIEW B, 2007, 75 (18)

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