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Noise-resilient Quantum Computing with a Nitrogen-Vacancy Center and Nuclear Spin

Thu, 2016-06-02 21:55 - Oliver Marty
Date: 
2016-02-22
Author(s): 

J. Casanova, Z.-Y. Wang, M. B. Plenio

Reference: 

arXiv:1602.06862

URL: 

http://arxiv.org/abs/1602.06862

Selective control of qubits in a quantum register for the purposes of quantum information processing represents a critical challenge for dense spin ensembles in solid state systems. Here we present a protocol that achieves a complete set of selective single and two-qubit gates on nuclear spins in such an ensemble in diamond facilitated by a nearby NV center.

Robust dynamical decoupling sequences for individual-nuclear-spin addressing

Thu, 2016-06-02 21:48 - Oliver Marty
Date: 
2015-06-17 - 2015-10-05
Author(s): 

J. Casanova, Z.-Y. Wang, J. F. Haase, M. B. Plenio

Reference: 

Phys. Rev. A 92, 042304 (2015)

URL: 

http://journals.aps.org/pra/abstract/10.1103/PhysRevA.92.042304

We propose the use of non-equally-spaced decoupling pulses for high-resolution selective addressing of nuclear spins by a quantum sensor. The analytical model of the basic operating principle is supplemented by detailed numerical studies that demonstrate the high degree of selectivity and the robustness against static and dynamic control-field errors of this scheme.

Positioning nuclear spins in interacting clusters for quantum technologies and bioimaging

Thu, 2016-06-02 21:47 - Oliver Marty
Date: 
2015-10-14 - 2016-05-10
Author(s): 

Z.-Y. Wang, J. F. Haase, J. Casanova, M. B. Plenio

Reference: 

Phys. Rev. B 93, 174104 (2016)

URL: 

http://journals.aps.org/prb/abstract/10.1103/PhysRevB.93.174104

We propose a method to measure the hyperfine vectors between a nitrogen-vacancy (NV) center and an environment of interacting nuclear spins. Our protocol enables the generation of tunable electron-nuclear coupling Hamiltonians while suppressing unwanted internuclear interactions.

Sensing of single nuclear spins in random thermal motion with proximate nitrogen-vacancy centers

Thu, 2016-06-02 21:38 - Oliver Marty
Date: 
2015-08-10 - 2016-03-08
Author(s): 

M. Bruderer, P. Fernández-Acebal, R. Aurich, and M. B. Plenio

Reference: 

Phys. Rev. B 93, 115116

URL: 

http://journals.aps.org/prb/abstract/10.1103/PhysRevB.93.115116

Nitrogen-vacancy (NV) centers in diamond have emerged as valuable tools for sensing and polarizing spins. Motivated by potential applications in chemistry, biology, and medicine, we show that NV-based sensors are capable of detecting single spin targets even if they undergo diffusive motion in an ambient thermal environment.

Nondestructive selective probing of phononic excitations in a cold Bose gas using impurities

Thu, 2016-06-02 21:33 - Oliver Marty
Date: 
2014-11-07 - 2015-01-12
Author(s): 

D. Hangleiter, M. T. Mitchison, T. H. Johnson, M. Bruderer, M. B. Plenio, and D. Jaksch

Reference: 

Phys. Rev. A 91, 013611

URL: 

http://journals.aps.org/pra/abstract/10.1103/PhysRevA.91.013611

We introduce a detector that selectively probes the phononic excitations of a cold Bose gas.

Requirements for a loophole-free photonic Bell test using imperfect setting generators

Wed, 2016-06-01 18:39 - Gemma De las Cuevas
Date: 
2016-03-10
Author(s): 

J. Kofler, M. Giustina, J.-Å. Larsson, M. W. Mitchell

Reference: 

Phys. Rev. A 93, 032115 (2016)

URL: 

http://journals.aps.org/pra/abstract/10.1103/PhysRevA.93.032115

Significant- loophole-free test of Bell’s theorem with entangled photons

Wed, 2016-06-01 18:30 - Gemma De las Cuevas
Date: 
2015-12-16
Author(s): 

M. Giustina, M. A. M. Versteegh, S. Wengerowsky, J. Handsteiner, A. Hochrainer, K. Phelan, F. Steinlechner, J. Kofler, J.-Å. Larsson, C. Abellán, W. Amaya, V. Pruneri, M. W. Mitchell, J. Beyer, T. Gerrits, A. E. Lita, L. K. Shalm, S. W. Nam, T. Scheidl, R. Ursin, B. Wittmann, and A. Zeilinger

Reference: 

Phys. Rev. Lett. 115, 250401 (2015)

URL: 

http://journals.aps.org/prl/abstract/10.1103/PhysRevLett.115.250401

Chiral topological spin liquids with projected entangled pair states

Wed, 2016-06-01 18:24 - Gemma De las Cuevas
Date: 
2015-06-29
Author(s): 

D. Poilblanc, J. I. Cirac, N. Schuch

Reference: 

Phys. Rev. B 91, 224431 (2015)

URL: 

http://journals.aps.org/prb/abstract/10.1103/PhysRevB.91.224431

Rapid Adiabatic Preparation of Injective Projected Entangled Pair States and Gibbs States

Wed, 2016-06-01 18:23 - Gemma De las Cuevas
Date: 
2016-02-25
Author(s): 

Yimin Ge, András Molnár, J. Ignacio Cirac

Reference: 

Phys. Rev. Lett. 116, 080503 (2016)

URL: 

http://journals.aps.org/prl/abstract/10.1103/PhysRevLett.116.080503

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