Laser-free trapped-ion entangling gates with simultaneous insensitivity to qubit and motional decoherence

Sutherland, R. T.; Srinivas, R.; Burd, S. C.; Knaack, H. M.; Wilson, A. C.; Wineland, D. J.; Leibfried, D.; Allcock, D. C.; Slichter, D. H.; Libby, S. B.

doi:10.1103/physreva.101.042334

Title: Laser-free trapped-ion entangling gates with simultaneous insensitivity to qubit and motional decoherence

Abstract

The dominant error sources for state-of-the-art laser-free trapped-ion entangling gates are decoherence of the qubit state and the ion motion. The effect of these decoherence mechanisms can be suppressed with additional control fields or with techniques that have the disadvantage of reducing gate speed. In this study, we propose using a near-motional-frequency magnetic field gradient to implement a laser-free gate that is simultaneously resilient to both types of decoherence, does not require additional control fields, and has a relatively small cost in gate speed.

Authors:

^[1]; Srinivas, R. ^[2];

^[2];

^[2]; Wilson, A. C. ^[3]; Wineland, D. J. ^[4]; Leibfried, D. ^[3];

^[4]; Slichter, D. H. ^[3];

^[1]

Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
National Inst. of Standards and Technology (NIST), Boulder, CO (United States); Univ. of Colorado, Boulder, CO (United States)
National Inst. of Standards and Technology (NIST), Boulder, CO (United States)
National Inst. of Standards and Technology (NIST), Boulder, CO (United States); Univ. of Colorado, Boulder, CO (United States); Univ. of Oregon, Eugene, OR (United States)

Publication Date:: Wed Apr 29 00:00:00 EDT 2020

Research Org.:: Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)

Sponsoring Org.:: USDOE National Nuclear Security Administration (NNSA)

OSTI Identifier:: 1661040

Report Number(s):: LLNL-JRNL-792460
Journal ID: ISSN 2469-9926; 990776; TRN: US2203577

Grant/Contract Number:: AC52-07NA27344

Resource Type:: Accepted Manuscript

Journal Name:: Physical Review A

Additional Journal Information:: Journal Volume: 101; Journal Issue: 4; Journal ID: ISSN 2469-9926

Publisher:: American Physical Society (APS)

Country of Publication:: United States

Language:: English

Subject:: 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; open quantum systems & decoherence; quantum computation; quantum gates; quantum information with trapped ions; trapped ions; atom & ion trapping & guiding; coherent control; first-principle calculations

Citation Formats


                    Sutherland, R. T., Srinivas, R., Burd, S. C., Knaack, H. M., Wilson, A. C., Wineland, D. J., Leibfried, D., Allcock, D. C., Slichter, D. H., and Libby, S. B. Laser-free trapped-ion entangling gates with simultaneous insensitivity to qubit and motional decoherence.  United States: N. p., 2020. 
Web.  doi:10.1103/physreva.101.042334.

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                    Sutherland, R. T., Srinivas, R., Burd, S. C., Knaack, H. M., Wilson, A. C., Wineland, D. J., Leibfried, D., Allcock, D. C., Slichter, D. H., & Libby, S. B. Laser-free trapped-ion entangling gates with simultaneous insensitivity to qubit and motional decoherence.  United States.  https://doi.org/10.1103/physreva.101.042334

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                    Sutherland, R. T., Srinivas, R., Burd, S. C., Knaack, H. M., Wilson, A. C., Wineland, D. J., Leibfried, D., Allcock, D. C., Slichter, D. H., and Libby, S. B. Wed .  
"Laser-free trapped-ion entangling gates with simultaneous insensitivity to qubit and motional decoherence".  United States.  https://doi.org/10.1103/physreva.101.042334.  https://www.osti.gov/servlets/purl/1661040.

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@article{osti_1661040,

  title        = {Laser-free trapped-ion entangling gates with simultaneous insensitivity to qubit and motional decoherence},

  author       = {Sutherland, R. T. and Srinivas, R. and Burd, S. C. and Knaack, H. M. and Wilson, A. C. and Wineland, D. J. and Leibfried, D. and Allcock, D. C. and Slichter, D. H. and Libby, S. B.},

  abstractNote = {The dominant error sources for state-of-the-art laser-free trapped-ion entangling gates are decoherence of the qubit state and the ion motion. The effect of these decoherence mechanisms can be suppressed with additional control fields or with techniques that have the disadvantage of reducing gate speed. In this study, we propose using a near-motional-frequency magnetic field gradient to implement a laser-free gate that is simultaneously resilient to both types of decoherence, does not require additional control fields, and has a relatively small cost in gate speed.},

  doi          = {10.1103/physreva.101.042334},

  journal      = {Physical Review A},

  number       = 4,

  volume       = 101,

  place        = {United States},

  year         = {Wed Apr 29 00:00:00 EDT 2020},

  month        = {Wed Apr 29 00:00:00 EDT 2020}

}

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Title: Laser-free trapped-ion entangling gates with simultaneous insensitivity to qubit and motional decoherence

Abstract

Citation Formats

Quantum gates and memory using microwave-dressed states journal, August 2011

Robust 2-Qubit Gates in a Linear Ion Crystal Using a Frequency-Modulated Driving Force journal, January 2018

Coherent Error Suppression in Multiqubit Entangling Gates journal, July 2012

Robust trapped-ion quantum logic gates by continuous dynamical decoupling journal, April 2012

Errors in trapped-ion quantum gates due to spontaneous photon scattering journal, April 2007

High fidelity quantum gates of trapped ions in the presence of motional heating journal, December 2016

Dynamical Decoupling of Open Quantum Systems journal, March 1999

High-Fidelity Universal Gate Set for Be 9 + Ion Qubits journal, August 2016

High-Fidelity Quantum Logic Gates Using Trapped-Ion Hyperfine Qubits journal, August 2016

Ion-Trap Quantum Logic Using Long-Wavelength Radiation journal, November 2001

Quantum Computation and Quantum Information book, January 2011

Designer Spin Pseudomolecule Implemented with Trapped Ions in a Magnetic Gradient journal, June 2012

Demonstration of a Fundamental Quantum Logic Gate journal, December 1995

Trapped-Ion Quantum Logic Gates Based on Oscillating Magnetic Fields journal, August 2008

Efficient preparation and detection of microwave dressed-state qubits and qutrits with trapped ions journal, January 2015

Trapped-Ion Quantum Logic with Global Radiation Fields journal, November 2016

High-Fidelity Preparation, Gates, Memory, and Readout of a Trapped-Ion Quantum Bit journal, November 2014

Experimental issues in coherent quantum-state manipulation of trapped atomic ions journal, May 1998

The measurement of power spectra from the point of view of communications engineering — Part I journal, January 1958

High-Fidelity Trapped-Ion Quantum Logic Using Near-Field Microwaves journal, September 2016

Resilient Entangling Gates for Trapped Ions journal, November 2018

Trapped-Ion Spin-Motion Coupling with Microwaves and a Near-Motional Oscillating Magnetic Field Gradient journal, April 2019

Quantum computing with trapped ions journal, December 2008

Experimental demonstration of a robust, high-fidelity geometric two ion-qubit phase gate journal, March 2003

Robust and Resource-Efficient Microwave Near-Field Entangling Be + 9 Gate journal, December 2019

Robust Entanglement Gates for Trapped-Ion Qubits journal, November 2018

Quantum dynamics of trapped ions in a dynamic field gradient using dressed states journal, August 2017

Dynamical suppression of decoherence in two-state quantum systems journal, October 1998

Versatile laser-free trapped-ion entangling gates journal, March 2019

Fast quantum gates for cold trapped ions journal, September 2000

Multiparticle Entanglement of Hot Trapped Ions journal, March 1999

Laserless trapped-ion quantum simulations without spontaneous scattering using microtrap arrays journal, February 2008

Individual Addressing of Trapped Ions and Coupling of Motional and Spin States Using rf Radiation journal, February 2009

Generation of spin-motion entanglement in a trapped ion using long-wavelength radiation journal, January 2015

Quantum Computations with Cold Trapped Ions journal, May 1995

Ion trap quantum gates with amplitude-modulated laser beams journal, January 2008

Microwave quantum logic gates for trapped ions journal, August 2011

Integrated 9Be+ multi-qubit gate device for the ion-trap quantum computer journal, August 2019

Phase-Modulated Decoupling and Error Suppression in Qubit-Oscillator Systems journal, March 2015

Entanglement and quantum computation with ions in thermal motion journal, July 2000

Entangled states of trapped atomic ions journal, June 2008

Quantum gates and memory using microwave-dressed states
journal, August 2011

Robust 2-Qubit Gates in a Linear Ion Crystal Using a Frequency-Modulated Driving Force
journal, January 2018

Coherent Error Suppression in Multiqubit Entangling Gates
journal, July 2012

Robust trapped-ion quantum logic gates by continuous dynamical decoupling
journal, April 2012

Errors in trapped-ion quantum gates due to spontaneous photon scattering
journal, April 2007

High fidelity quantum gates of trapped ions in the presence of motional heating
journal, December 2016

Dynamical Decoupling of Open Quantum Systems
journal, March 1999

High-Fidelity Universal Gate Set for ${}^{9}{Be}^{+}$ Ion Qubits
journal, August 2016

High-Fidelity Quantum Logic Gates Using Trapped-Ion Hyperfine Qubits
journal, August 2016

Ion-Trap Quantum Logic Using Long-Wavelength Radiation
journal, November 2001

Quantum Computation and Quantum Information
book, January 2011

Designer Spin Pseudomolecule Implemented with Trapped Ions in a Magnetic Gradient
journal, June 2012

Demonstration of a Fundamental Quantum Logic Gate
journal, December 1995

Trapped-Ion Quantum Logic Gates Based on Oscillating Magnetic Fields
journal, August 2008

Efficient preparation and detection of microwave dressed-state qubits and qutrits with trapped ions
journal, January 2015

Trapped-Ion Quantum Logic with Global Radiation Fields
journal, November 2016

High-Fidelity Preparation, Gates, Memory, and Readout of a Trapped-Ion Quantum Bit
journal, November 2014

Experimental issues in coherent quantum-state manipulation of trapped atomic ions
journal, May 1998

The measurement of power spectra from the point of view of communications engineering — Part I
journal, January 1958

High-Fidelity Trapped-Ion Quantum Logic Using Near-Field Microwaves
journal, September 2016

Resilient Entangling Gates for Trapped Ions
journal, November 2018

Trapped-Ion Spin-Motion Coupling with Microwaves and a Near-Motional Oscillating Magnetic Field Gradient
journal, April 2019

Quantum computing with trapped ions
journal, December 2008

Experimental demonstration of a robust, high-fidelity geometric two ion-qubit phase gate
journal, March 2003

Robust and Resource-Efficient Microwave Near-Field Entangling ${}^{9}{Be}^{+}$ Gate
journal, December 2019

Robust Entanglement Gates for Trapped-Ion Qubits
journal, November 2018

Quantum dynamics of trapped ions in a dynamic field gradient using dressed states
journal, August 2017

Dynamical suppression of decoherence in two-state quantum systems
journal, October 1998

Versatile laser-free trapped-ion entangling gates
journal, March 2019

Fast quantum gates for cold trapped ions
journal, September 2000

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journal, March 1999

Laserless trapped-ion quantum simulations without spontaneous scattering using microtrap arrays
journal, February 2008

Individual Addressing of Trapped Ions and Coupling of Motional and Spin States Using rf Radiation
journal, February 2009

Generation of spin-motion entanglement in a trapped ion using long-wavelength radiation
journal, January 2015

Quantum Computations with Cold Trapped Ions
journal, May 1995

Ion trap quantum gates with amplitude-modulated laser beams
journal, January 2008

Microwave quantum logic gates for trapped ions
journal, August 2011

Integrated 9Be+ multi-qubit gate device for the ion-trap quantum computer
journal, August 2019

Phase-Modulated Decoupling and Error Suppression in Qubit-Oscillator Systems
journal, March 2015

Entanglement and quantum computation with ions in thermal motion
journal, July 2000

Entangled states of trapped atomic ions
journal, June 2008