Opportunities for Long-Range Magnon-Mediated Entanglement of Spin Qubits via On- and Off-Resonant Coupling

被引：73

作者：

Fukami, Masaya ^{[1
]}

Candido, Denis R. ^{[2
]}

Awschalom, David D. ^{[1
,3
,4
]}

Flatte, Michael E. ^{[2
,5
]}

机构：

[1] Univ Chicago, Pritzker Sch Mol Engn, Chicago, IL 60637 USA

[2] Univ Iowa, Dept Phys & Astron, Iowa City, IA 52242 USA

[3] Argonne Natl Lab, Ctr Mol Engn, Lemont, IL USA

[4] Argonne Natl Lab, Mat Sci Div, Lemont, IL USA

[5] Eindhoven Univ Technol, Dept Appl Phys, Eindhoven, Netherlands

来源：

PRX QUANTUM | 2021年 / 2卷 / 04期

关键词：

COHERENT DYNAMICS; BELL INEQUALITY; ELECTRON SPINS; SINGLE SPINS; QUANTUM; VIOLATION;

D O I：

10.1103/PRXQuantum.2.040314

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The ability to manipulate entanglement between multiple spatially separated qubits is essential for quantum-information processing. Although nitrogen-vacancy (NV) centers in diamond provide a promising qubit platform, developing scalable two-qubit gates remains a well-known challenge. To this end, magnon-mediated entanglement proposals have attracted attention due to their long-range spin-coherent propagation. Optimal device geometries and gate protocols of such schemes, however, have yet to be determined. Here we predict strong long-distance (mu m) NV-NV coupling via magnon modes with cooperativities exceeding unity in ferromagnetic bar and waveguide structures. Moreover, we explore and compare on-resonant transduction and off-resonant virtual-magnon exchange protocols, and discuss their suitability for generating or manipulating entangled states at low temperatures (T < 150 mK) under realistic experimental conditions. This work will guide future experiments that aim to entangle spin qubits in solids with magnon excitations.

引用

页数：34

共 95 条

[51] Decoherence-free subspaces for quantum computation [J].

Lidar, DA ;

Chuang, IL ;

Whaley, KB .

PHYSICAL REVIEW LETTERS, 1998, 81 (12) :2594-2597

[52] GENERATORS OF QUANTUM DYNAMICAL SEMIGROUPS [J].

LINDBLAD, G .

COMMUNICATIONS IN MATHEMATICAL PHYSICS, 1976, 48 (02) :119-130

[53] Cooling a mechanical resonator with nitrogen-vacancy centres using a room temperature excited state spin-strain interaction [J].

MacQuarrie, E. R. ;

Otten, M. ;

Gray, S. K. ;

Fuchs, G. D. .

NATURE COMMUNICATIONS, 2017, 8

[54] Fast Dynamical Decoupling of the Molmer-Sorensen Entangling Gate [J].

Manovitz, Tom ;

Rotem, Amit ;

Shaniv, Ravid ;

Cohen, Itsik ;

Shapira, Yotam ;

Akerman, Nitzan ;

Retzker, Alex ;

Ozeri, Roee .

PHYSICAL REVIEW LETTERS, 2017, 119 (22)

[55] Quantum theory of cavity-assisted sideband cooling of mechanical motion [J].

Marquardt, Florian ;

Chen, Joe P. ;

Clerk, A. A. ;

Girvin, S. M. .

PHYSICAL REVIEW LETTERS, 2007, 99 (09)

[56] Imaging the Local Charge Environment of Nitrogen-Vacancy Centers in Diamond [J].

Mittiga, T. ;

Hsieh, S. ;

Zu, C. ;

Kobrin, B. ;

Machado, F. ;

Bhattacharyya, P. ;

Rui, N. Z. ;

Jarmola, A. ;

Choi, S. ;

Budker, D. ;

Yao, N. Y. .

PHYSICAL REVIEW LETTERS, 2018, 121 (24)

[57] Magnetic resonance in defect spins mediated by spin waves [J].

Muehlherr, Clara ;

Shkolnikov, V. O. ;

Burkard, Guido .

PHYSICAL REVIEW B, 2019, 99 (19)

[58] Nanomagnonic Cavities for Strong Spin-Magnon Coupling and Magnon-Mediated Spin-Spin Interactions [J].

Neuman, Tomas ;

Wang, Derek S. ;

Narang, Prineha .

PHYSICAL REVIEW LETTERS, 2020, 125 (24)

[59] Multipartite entanglement among single spins in diamond [J].

Neumann, P. ;

Mizuochi, N. ;

Rempp, F. ;

Hemmer, P. ;

Watanabe, H. ;

Yamasaki, S. ;

Jacques, V. ;

Gaebel, T. ;

Jelezko, F. ;

Wrachtrup, J. .

SCIENCE, 2008, 320 (5881) :1326-1329

[60] Quantum register based on coupled electron spins in a room-temperature solid [J].

Neumann, P. ;

Kolesov, R. ;

Naydenov, B. ;

Beck, J. ;

Rempp, F. ;

Steiner, M. ;

Jacques, V. ;

Balasubramanian, G. ;

Markham, M. L. ;

Twitchen, D. J. ;

Pezzagna, S. ;

Meijer, J. ;

Twamley, J. ;

Jelezko, F. ;

Wrachtrup, J. .

NATURE PHYSICS, 2010, 6 (04) :249-253

← 1 2 3 4 5 6 7 8 9 10 →