High-Fidelity Bell-State Preparation with 40Ca+ Optical Qubits

被引：101

作者：

Clark, Craig R. ^{[1
]}

Tinkey, Holly N. ^{[1
]}

Sawyer, Brian C. ^{[1
]}

Meier, Adam M. ^{[1
]}

Burkhardt, Karl A. ^{[1
]}

Seck, Christopher M. ^{[1
,2
]}

Shappert, Christopher M. ^{[1
]}

Guise, Nicholas D. ^{[1
]}

Volin, Curtis E. ^{[1
,3
]}

Fallek, Spencer D. ^{[1
]}

Hayden, Harley T. ^{[1
]}

Rellergert, Wade G. ^{[1
]}

Brown, Kenton R. ^{[1
]}

机构：

[1] Georgia Tech Res Inst, Atlanta, GA 30332 USA

[2] Oak Ridge Natl Lab, 1 Bethel Valley Rd, Oak Ridge, TN 37830 USA

[3] Honeywell Quantum Solut, 303 S Technol Ct, Broomfield, CO 80021 USA

来源：

PHYSICAL REVIEW LETTERS | 2021年 / 127卷 / 13期

关键词：

QUANTUM; ION; UNIVERSAL;

D O I：

10.1103/PhysRevLett.127.130505

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Entanglement generation in trapped-ion systems has relied thus far on two distinct but related geometric phase gate techniques: Molmer-Sorensen 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. A 103, 022427 (2021)]. Here we report an experimental demonstration of this entangling gate using a pair of C-40(+) ions in a cryogenic surface-electrode ion trap and a commercial, high-power, 532 nm Nd:YAG laser. Generating a Bell state in 35 mu s, we directly measure an infidelity of 6(3) x 10(-4) without subtraction of experimental errors. The 532 nm gate laser wavelength suppresses intrinsic photon scattering error to similar to 1 x 10(-5).

引用

页数：5

共 26 条

[1] Universal gate-set for trapped-ion qubits using a narrow linewidth diode laser
Akerman, Nitzan
Navon, Nir
Kotler, Shlomi
Glickman, Yinnon
Ozeri, Roee
[J]. NEW JOURNAL OF PHYSICS, 2015, 17
[2] Quantum circuits with many photons on a programmable nanophotonic chip
Arrazola, J. M.
Bergholm, V
Bradler, K.
Bromley, T. R.
Collins, M. J.
Dhand, I
Fumagalli, A.
Gerrits, T.
Goussev, A.
Helt, L. G.
Hundal, J.
Isacsson, T.
Israel, R. B.
Izaac, J.
Jahangiri, S.
Janik, R.
Killoran, N.
Kumar, S. P.
Lavoie, J.
Lita, A. E.
Mahler, D. H.
Menotti, M.
Morrison, B.
Nam, S. W.
Neuhaus, L.
Qi, H. Y.
Quesada, N.
Repingon, A.
Sabapathy, K. K.
Schuld, M.
Su, D.
Swinarton, J.
Szava, A.
Tan, K.
Tan, P.
Vaidya, V. D.
Vernon, Z.
Zabaneh, Z.
Zhang, Y.
[J]. NATURE, 2021, 591 (7848) : 54 - +
[3] Fidelity Quantum Logic Gates Using Trapped-Ion Hyperfine Qubits
Ballance, C. J.
Harty, T. P.
Linke, N. M.
Sepiol, M. A.
Lucas, D. M.
[J]. PHYSICAL REVIEW LETTERS, 2016, 117 (06)
[4] Towards fault-tolerant quantum computing with trapped ions
Benhelm, Jan
Kirchmair, Gerhard
Roos, Christian F.
Blatt, Rainer
[J]. NATURE PHYSICS, 2008, 4 (06) : 463 - 466
[5] Assessing the Progress of Trapped-Ion Processors Towards Fault-Tolerant Quantum Computation
Bermudez, A.
Xu, X.
Nigmatullin, R.
O'Gorman, J.
Negnevitsky, V.
Schindler, P.
Monz, T.
Poschinger, U. G.
Hempel, C.
Home, J.
Schmidt-Kaler, F.
Biercuk, M.
Blatt, R.
Benjamin, S.
Mueller, M.
[J]. PHYSICAL REVIEW X, 2017, 7 (04):
[6] Interval estimation for a binomial proportion - Comment - Rejoinder
Brown, LD
Cai, TT
DasGupta, A
Agresti, A
Coull, BA
Casella, G
Corcoran, C
Mehta, C
Ghosh, M
Santner, TJ
Brown, LD
Cai, TT
DasGupta, A
[J]. STATISTICAL SCIENCE, 2001, 16 (02) : 101 - 133
[7] Trapped-ion quantum computing: Progress and challenges
Bruzewicz, Colin D.
Chiaverini, John
McConnell, Robert
Sage, Jeremy M.
[J]. APPLIED PHYSICS REVIEWS, 2019, 6 (02)
[8] Semiconductor qubits in practice
Chatterjee, Anasua
Stevenson, Paul
De Franceschi, Silvano
Morello, Andrea
de Leon, Nathalie P.
Kuemmeth, Ferdinand
[J]. NATURE REVIEWS PHYSICS, 2021, 3 (03) : 157 - 177
[9] Observing a single hydrogen-like ion in a Penning trap at T=4K
Diederich, M
Haffner, H
Hermanspahn, N
Immel, M
Kluge, HJ
Ley, R
Mann, R
Quint, W
Stahl, S
Werth, G
[J]. HYPERFINE INTERACTIONS, 1998, 115 (1-4): : 185 - 192
[10] 2-BIT GATES ARE UNIVERSAL FOR QUANTUM COMPUTATION
DIVINCENZO, DP
[J]. PHYSICAL REVIEW A, 1995, 51 (02): : 1015 - 1022

← 1 2 3 →