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

Jau, Y. -Y.; Hankin, A. M.; Keating, T.; Deutsch, I. H.; Biedermann, G. W.

doi:10.1038/nphys3487

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:

Jau, Y. -Y. ^[1]; Hankin, A. M. ^[1]; Keating, T. ^[1]; Deutsch, I. H. ^[1]; Biedermann, G. W. ^[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:: Mon Oct 05 00:00:00 EDT 2015

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.

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                    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.  https://doi.org/10.1038/nphys3487

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                    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.  https://doi.org/10.1038/nphys3487.  https://www.osti.gov/servlets/purl/1347349.

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@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         = {Mon Oct 05 00:00:00 EDT 2015},

  month        = {Mon Oct 05 00:00:00 EDT 2015}

}

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

Abstract

Citation Formats

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

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

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Optimal frequency measurements with maximally correlated states journal, December 1996

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Deterministic entanglement of two neutral atoms via Rydberg blockade text, January 2010

Adiabatic quantum computation with Rydberg-dressed atoms text, January 2012

Digital atom interferometer with single particle control on a discretized spacetime geometry text, January 2014

Designing Frustrated Quantum Magnets with Laser-Dressed Rydberg Atoms text, January 2014

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

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journal, March 2013

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

Photonic quantum technologies
journal, December 2009

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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

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

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

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

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journal, April 2012

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

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journal, February 1999

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journal, March 1999

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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

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

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

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

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journal, August 2006

Optimal frequency measurements with maximally correlated states
journal, December 1996

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journal, March 2000

Mesoscopic atomic entanglement for precision measurements beyond the standard quantum limit
text, January 2008

Strongly correlated gases of Rydberg-dressed atoms: quantum and classical dynamics
text, January 2010

Deterministic entanglement of two neutral atoms via Rydberg blockade
text, January 2010

Adiabatic quantum computation with Rydberg-dressed atoms
text, January 2012

Digital atom interferometer with single particle control on a discretized spacetime geometry
text, January 2014

Designing Frustrated Quantum Magnets with Laser-Dressed Rydberg Atoms
text, January 2014

Fast quantum gates for neutral atoms
text, January 2000

Dipole Blockade and Quantum Information Processing in Mesoscopic Atomic Ensembles
text, January 2000

Quantum Logic Gates in Optical Lattices
text, January 1998

Electrons dynamics control by shaping femtosecond laser pulses in micro/nanofabrication: modeling, method, measurement and application
journal, August 2017

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journal, November 2016

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journal, June 2017

Many-body physics with individually controlled Rydberg atoms
journal, January 2020

Experimental investigations of dipole–dipole interactions between a few Rydberg atoms
journal, June 2016

Strongly interacting ultracold polar molecules
journal, June 2016

Quantum computing with atomic qubits and Rydberg interactions: progress and challenges
journal, October 2016

Calculation of Rydberg interaction potentials
journal, June 2017

Dynamics and quantum correlations in two independently driven Rydberg atoms with distinct laser fields
journal, August 2019

Rydberg atom quantum technologies
journal, January 2019

Single-site Rydberg addressing in 3D atomic arrays for quantum computing with neutral atoms
journal, January 2020

Quantum Zeno effect in the strong measurement regime of circuit quantum electrodynamics
journal, May 2016

Non-adiabatic quantum state preparation and quantum state transport in chains of Rydberg atoms
journal, December 2017

Single-atom trapping and transport in DMD-controlled optical tweezers
journal, February 2018

Precise single-qubit control of the reflection phase of a photon mediated by a strongly-coupled ancilla–cavity system
journal, May 2018

Coulomb anti-blockade in a Rydberg gas
journal, May 2019

Dissipative entanglement preparation via Rydberg antiblockade and Lyapunov control
journal, March 2019

Robust quantum state transfer via topologically protected edge channels in dipolar arrays
journal, January 2017

Entanglement of neutral-atom qubits with long ground-Rydberg coherence times
journal, December 2018

Quantum computing with neutral atoms
journal, September 2018

Dressed dense atomic gases
journal, August 2019

Extending matchgates to universal quantum computation via the Hubbard model
journal, November 2019

Nondestructive Rydberg parity meter and its applications
journal, January 2020

Quench dynamics of Rydberg-dressed bosons on two-dimensional square lattices
journal, January 2020

High-fidelity Rydberg-blockade entangling gate using shaped, analytic pulses
journal, September 2016

Defect-free atomic array formation using the Hungarian matching algorithm
journal, May 2017

Rydberg optical Feshbach resonances in cold gases
journal, September 2017

Applications of the modified Rydberg antiblockade regime with simultaneous driving
journal, October 2017

Directional quantum state transfer in a dissipative Rydberg-atom-cavity system
journal, March 2019

Accurate Quantum Logic Gates by Spin Echo in Rydberg Atoms
journal, September 2018

Algebraic localization from power-law couplings in disordered quantum wires
journal, October 2019

Coherent Control of a Single Trapped Rydberg Ion
journal, November 2017

Rydberg-Dressed Magneto-optical Trap
journal, May 2018

Observation of Interactions between Trapped Ions and Ultracold Rydberg Atoms
journal, June 2019

Gravity, entanglement and CPT-symmetry violation in particle mixing
journal, November 2019

Sub-kilohertz excitation lasers for quantum information processing with Rydberg atoms
journal, January 2018

Single-photon cesium Rydberg excitation spectroscopy using 3186-nm UV laser and room-temperature vapor cell
journal, January 2017

Quantum confined Rydberg excitons in reduced dimensions
journal, December 2019