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Title: Entangling atomic spins with a Rydberg-dressed spin-flip blockade

Abstract

Controlling the quantum entanglement between parts of a many-body system is key to unlocking the power of quantum technologies such as quantum computation, high-precision sensing, and the simulation of many-body physics. The spin degrees of freedom of ultracold neutral atoms in their ground electronic state provide a natural platform for such applications thanks to their long coherence times and the ability to control them with magneto-optical fields. However, the creation of strong coherent coupling between spins has been challenging. In this paper, we demonstrate a strong and tunable Rydberg-dressed interaction between spins of individually trapped caesium atoms with energy shifts of order 1 MHz in units of Planck’s constant. This interaction leads to a ground-state spin-flip blockade, whereby simultaneous hyperfine spin flips of two atoms are inhibited owing to their mutual interaction. Finally, we employ this spin-flip blockade to rapidly produce single-step Bell-state entanglement between two atoms with a fidelity ≥81(2)%.

Authors:
 [1];  [1];  [1];  [1];  [1]
  1. Sandia National Lab. (SNL-NM), Albuquerque, NM (United States); Univ. of New Mexico, Albuquerque, NM (United States). Center for Quantum Information and Control (CQuIC)
Publication Date:
Research Org.:
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States); Univ. of New Mexico, Albuquerque, NM (United States)
Sponsoring Org.:
USDOE Laboratory Directed Research and Development (LDRD) Program; National Science Foundation (NSF)
OSTI Identifier:
1347349
Report Number(s):
SAND-2015-0130J
Journal ID: ISSN 1745-2473; nphys3487
Grant/Contract Number:  
AC04-94AL85000; NSF-1212445
Resource Type:
Accepted Manuscript
Journal Name:
Nature Physics
Additional Journal Information:
Journal Volume: 12; Journal Issue: 1; Journal ID: ISSN 1745-2473
Publisher:
Nature Publishing Group (NPG)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; Quantum information; Qubits

Citation Formats

Jau, Y. -Y., Hankin, A. M., Keating, T., Deutsch, I. H., and Biedermann, G. W. Entangling atomic spins with a Rydberg-dressed spin-flip blockade. United States: N. p., 2015. Web. doi:10.1038/nphys3487.
Jau, Y. -Y., Hankin, A. M., Keating, T., Deutsch, I. H., & Biedermann, G. W. Entangling atomic spins with a Rydberg-dressed spin-flip blockade. United States. doi:10.1038/nphys3487.
Jau, Y. -Y., Hankin, A. M., Keating, T., Deutsch, I. H., and Biedermann, G. W. Mon . "Entangling atomic spins with a Rydberg-dressed spin-flip blockade". United States. doi:10.1038/nphys3487. https://www.osti.gov/servlets/purl/1347349.
@article{osti_1347349,
title = {Entangling atomic spins with a Rydberg-dressed spin-flip blockade},
author = {Jau, Y. -Y. and Hankin, A. M. and Keating, T. and Deutsch, I. H. and Biedermann, G. W.},
abstractNote = {Controlling the quantum entanglement between parts of a many-body system is key to unlocking the power of quantum technologies such as quantum computation, high-precision sensing, and the simulation of many-body physics. The spin degrees of freedom of ultracold neutral atoms in their ground electronic state provide a natural platform for such applications thanks to their long coherence times and the ability to control them with magneto-optical fields. However, the creation of strong coherent coupling between spins has been challenging. In this paper, we demonstrate a strong and tunable Rydberg-dressed interaction between spins of individually trapped caesium atoms with energy shifts of order 1 MHz in units of Planck’s constant. This interaction leads to a ground-state spin-flip blockade, whereby simultaneous hyperfine spin flips of two atoms are inhibited owing to their mutual interaction. Finally, we employ this spin-flip blockade to rapidly produce single-step Bell-state entanglement between two atoms with a fidelity ≥81(2)%.},
doi = {10.1038/nphys3487},
journal = {Nature Physics},
number = 1,
volume = 12,
place = {United States},
year = {2015},
month = {10}
}

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Cited by: 62 works
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Works referenced in this record:

Quantum Spintronics: Engineering and Manipulating Atom-Like Spins in Semiconductors
journal, March 2013


Superconducting Circuits for Quantum Information: An Outlook
journal, March 2013


Superconducting quantum circuits at the surface code threshold for fault tolerance
journal, April 2014


Photonic quantum technologies
journal, December 2009

  • O'Brien, Jeremy L.; Furusawa, Akira; Vučković, Jelena
  • Nature Photonics, Vol. 3, Issue 12
  • DOI: 10.1038/nphoton.2009.229

Single-qubit-gate error below 10 4 in a trapped ion
journal, September 2011


Scaling the Ion Trap Quantum Processor
journal, March 2013


Quantum computations on a topologically encoded qubit
journal, June 2014


Imaging single atoms in a three-dimensional array
journal, June 2007

  • Nelson, Karl D.; Li, Xiao; Weiss, David S.
  • Nature Physics, Vol. 3, Issue 8
  • DOI: 10.1038/nphys645

Deterministic entanglement of two neutral atoms via Rydberg blockade
journal, September 2010


Entanglement of Two Individual Neutral Atoms Using Rydberg Blockade
journal, January 2010


Mesoscopic atomic entanglement for precision measurements beyond the standard quantum limit
journal, June 2009

  • Appel, J.; Windpassinger, P. J.; Oblak, D.
  • Proceedings of the National Academy of Sciences, Vol. 106, Issue 27
  • DOI: 10.1073/pnas.0901550106

An optical lattice clock with accuracy and stability at the 10−18 level
journal, January 2014

  • Bloom, B. J.; Nicholson, T. L.; Williams, J. R.
  • Nature, Vol. 506, Issue 7486
  • DOI: 10.1038/nature12941

Spin Squeezing in a Rydberg Lattice Clock
journal, March 2014


Multiaxis Inertial Sensing with Long-Time Point Source Atom Interferometry
journal, August 2013


Observation of Free-Space Single-Atom Matter Wave Interference
journal, December 2012


Digital atom interferometer with single particle control on a discretized space-time geometry
journal, June 2012

  • Steffen, A.; Alberti, A.; Alt, W.
  • Proceedings of the National Academy of Sciences, Vol. 109, Issue 25
  • DOI: 10.1073/pnas.1204285109

Quantum simulations with ultracold quantum gases
journal, April 2012

  • Bloch, Immanuel; Dalibard, Jean; Nascimbène, Sylvain
  • Nature Physics, Vol. 8, Issue 4
  • DOI: 10.1038/nphys2259

Designing Frustrated Quantum Magnets with Laser-Dressed Rydberg Atoms
journal, April 2015


Quantum Logic Gates in Optical Lattices
journal, February 1999


Entanglement of Atoms via Cold Controlled Collisions
journal, March 1999


Fast Quantum Gates for Neutral Atoms
journal, September 2000


Dipole Blockade and Quantum Information Processing in Mesoscopic Atomic Ensembles
journal, June 2001


Two-atom Rydberg blockade using direct 6 S to n P excitation
journal, March 2014

  • Hankin, A. M.; Jau, Y.-Y.; Parazzoli, L. P.
  • Physical Review A, Vol. 89, Issue 3, Article No. 033416
  • DOI: 10.1103/PhysRevA.89.033416

Demonstration of a Neutral Atom Controlled-NOT Quantum Gate
journal, January 2010


Spin squeezing of atoms by the dipole interaction in virtually excited Rydberg states
journal, April 2002


Interactions between Rydberg-dressed atoms
journal, September 2010


Rydberg dressing: understanding of collective many-body effects and implications for experiments
journal, June 2014


Strongly Correlated Gases of Rydberg-Dressed Atoms: Quantum and Classical Dynamics
journal, June 2010


Spin-Liquid Ground State of the S = 1/2 Kagome Heisenberg Antiferromagnet
journal, April 2011


Adiabatic quantum computation with Rydberg-dressed atoms
journal, May 2013

  • Keating, Tyler; Goyal, Krittika; Jau, Yuan-Yu
  • Physical Review A, Vol. 87, Issue 5, Article No. 052314
  • DOI: 10.1103/PhysRevA.87.052314

Robust quantum logic in neutral atoms via adiabatic Rydberg dressing
journal, January 2015


Cold Cs Rydberg-gas interactions
journal, August 2006


Optimal frequency measurements with maximally correlated states
journal, December 1996


Experimental entanglement of four particles
journal, March 2000

  • Sackett, C. A.; Kielpinski, D.; King, B. E.
  • Nature, Vol. 404, Issue 6775
  • DOI: 10.1038/35005011

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