High-Fidelity Bell-State Preparation with Optical Qubits

Craig R. Clark; Holly N. Tinkey; Brian C. Sawyer; Adam M. Meier; Karl A. Burkhardt; Christopher M. Seck; Christopher M. Shappert; Nicholas D. Guise; Curtis E. Volin; Spencer D. Fallek; Harley T. Hayden; Wade G. Rellergert; Kenton R. Brown

doi:10.1103/PhysRevLett.127.130505

High-Fidelity Bell-State Preparation with Optical Qubits

Craig R. Clark, Holly N. Tinkey, Brian C. Sawyer, Adam M. Meier, Karl A. Burkhardt, Christopher M. Seck, Christopher M. Shappert, Nicholas D. Guise, Curtis E. Volin, Spencer D. Fallek, Harley T. Hayden, Wade G. Rellergert, Kenton R. Brown

Research output: Contribution to journal › Article › peer-review

98 Scopus citations

Abstract

Entanglement generation in trapped-ion systems has relied thus far on two distinct but related geometric phase gate techniques: Mølmer-Sørensen and light-shift gates. We recently proposed a variant of the light-shift scheme where the qubit levels are separated by an optical frequency [B. C. Sawyer and K. R. Brown, Phys. Rev. A103, 022427 (2021)PLRAAN2469-992610.1103/PhysRevA.103.022427]. Here we report an experimental demonstration of this entangling gate using a pair of ions in a cryogenic surface-electrode ion trap and a commercial, high-power, 532 nm Nd:YAG laser. Generating a Bell state in , we directly measure an infidelity of without subtraction of experimental errors. The 532 nm gate laser wavelength suppresses intrinsic photon scattering error to .

Original language	English
Article number	130505
Journal	Physical Review Letters
Volume	127
Issue number	13
DOIs	https://doi.org/10.1103/PhysRevLett.127.130505
State	Published - Sep 24 2021
Externally published	Yes

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10.1103/PhysRevLett.127.130505

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@article{c4357483ce464676b476ebf8961835f5,

title = "High-Fidelity Bell-State Preparation with Optical Qubits",

abstract = "Entanglement generation in trapped-ion systems has relied thus far on two distinct but related geometric phase gate techniques: M{\o}lmer-S{\o}rensen and light-shift gates. We recently proposed a variant of the light-shift scheme where the qubit levels are separated by an optical frequency [B. C. Sawyer and K. R. Brown, Phys. Rev. A103, 022427 (2021)PLRAAN2469-992610.1103/PhysRevA.103.022427]. Here we report an experimental demonstration of this entangling gate using a pair of ions in a cryogenic surface-electrode ion trap and a commercial, high-power, 532 nm Nd:YAG laser. Generating a Bell state in , we directly measure an infidelity of without subtraction of experimental errors. The 532 nm gate laser wavelength suppresses intrinsic photon scattering error to .",

author = "Clark, {Craig R.} and Tinkey, {Holly N.} and Sawyer, {Brian C.} and Meier, {Adam M.} and Burkhardt, {Karl A.} and Seck, {Christopher M.} and Shappert, {Christopher M.} and Guise, {Nicholas D.} and Volin, {Curtis E.} and Fallek, {Spencer D.} and Hayden, {Harley T.} and Rellergert, {Wade G.} and Brown, {Kenton R.}",

note = "Publisher Copyright: {\textcopyright} 2021 American Physical Society",

year = "2021",

month = sep,

day = "24",

doi = "10.1103/PhysRevLett.127.130505",

language = "English",

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T1 - High-Fidelity Bell-State Preparation with Optical Qubits

AU - Clark, Craig R.

AU - Tinkey, Holly N.

AU - Sawyer, Brian C.

AU - Meier, Adam M.

AU - Burkhardt, Karl A.

AU - Seck, Christopher M.

AU - Shappert, Christopher M.

AU - Guise, Nicholas D.

AU - Volin, Curtis E.

AU - Fallek, Spencer D.

AU - Hayden, Harley T.

AU - Rellergert, Wade G.

AU - Brown, Kenton R.

PY - 2021/9/24

Y1 - 2021/9/24

N2 - Entanglement generation in trapped-ion systems has relied thus far on two distinct but related geometric phase gate techniques: Mølmer-Sørensen and light-shift gates. We recently proposed a variant of the light-shift scheme where the qubit levels are separated by an optical frequency [B. C. Sawyer and K. R. Brown, Phys. Rev. A103, 022427 (2021)PLRAAN2469-992610.1103/PhysRevA.103.022427]. Here we report an experimental demonstration of this entangling gate using a pair of ions in a cryogenic surface-electrode ion trap and a commercial, high-power, 532 nm Nd:YAG laser. Generating a Bell state in , we directly measure an infidelity of without subtraction of experimental errors. The 532 nm gate laser wavelength suppresses intrinsic photon scattering error to .

AB - Entanglement generation in trapped-ion systems has relied thus far on two distinct but related geometric phase gate techniques: Mølmer-Sørensen and light-shift gates. We recently proposed a variant of the light-shift scheme where the qubit levels are separated by an optical frequency [B. C. Sawyer and K. R. Brown, Phys. Rev. A103, 022427 (2021)PLRAAN2469-992610.1103/PhysRevA.103.022427]. Here we report an experimental demonstration of this entangling gate using a pair of ions in a cryogenic surface-electrode ion trap and a commercial, high-power, 532 nm Nd:YAG laser. Generating a Bell state in , we directly measure an infidelity of without subtraction of experimental errors. The 532 nm gate laser wavelength suppresses intrinsic photon scattering error to .

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VL - 127

JO - Physical Review Letters

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IS - 13

M1 - 130505

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High-Fidelity Bell-State Preparation with Optical Qubits

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