Details
| Original language | English |
|---|---|
| Pages (from-to) | 1636-1641 |
| Number of pages | 6 |
| Journal | Nature physics |
| Volume | 20 |
| Issue number | 10 |
| Early online date | 29 Jul 2024 |
| Publication status | Published - Oct 2024 |
Abstract
Precise quantum control and measurement of several harmonic oscillators, such as the modes of the electromagnetic field in a cavity or of mechanical motion, are key for their use as quantum platforms. The motional modes of trapped ions can be individually controlled and have good coherence properties. However, achieving high-fidelity two-mode operations and non-destructive measurements of the motional state has been challenging. Here we demonstrate the coherent exchange of single motional quanta between spectrally separated harmonic motional modes of a trapped-ion crystal. The timing, strength, and phase of the coupling are controlled through an oscillating electric potential with suitable spatial variation. Coupling rates that are much larger than decoherence rates enable demonstrations of high-fidelity quantum state transfer and beam-splitter operations, entanglement of motional modes, and Hong–Ou–Mandel-type interference. Additionally, we use the motional coupling to enable repeated non-destructive projective measurement of a trapped-ion motional state. Our work enhances the suitability of trapped-ion motion for continuous-variable quantum computing and error correction and may provide opportunities to improve the performance of motional cooling and motion-mediated entangling interactions.
ASJC Scopus subject areas
- Physics and Astronomy(all)
- General Physics and Astronomy
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In: Nature physics, Vol. 20, No. 10, 10.2024, p. 1636-1641.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Coherent coupling and non-destructive measurement of trapped-ion mechanical oscillators
AU - Hou, Pan Yu
AU - Wu, Jenny J.
AU - Erickson, Stephen D.
AU - Cole, Daniel C.
AU - Zarantonello, Giorgio
AU - Brandt, Adam D.
AU - Geller, Shawn
AU - Kwiatkowski, Alex
AU - Glancy, Scott
AU - Knill, Emanuel
AU - Wilson, Andrew C.
AU - Slichter, Daniel H.
AU - Leibfried, Dietrich
N1 - Publisher Copyright: © This is a U.S. Government work and not under copyright protection in the US; foreign copyright protection may apply 2024.
PY - 2024/10
Y1 - 2024/10
N2 - Precise quantum control and measurement of several harmonic oscillators, such as the modes of the electromagnetic field in a cavity or of mechanical motion, are key for their use as quantum platforms. The motional modes of trapped ions can be individually controlled and have good coherence properties. However, achieving high-fidelity two-mode operations and non-destructive measurements of the motional state has been challenging. Here we demonstrate the coherent exchange of single motional quanta between spectrally separated harmonic motional modes of a trapped-ion crystal. The timing, strength, and phase of the coupling are controlled through an oscillating electric potential with suitable spatial variation. Coupling rates that are much larger than decoherence rates enable demonstrations of high-fidelity quantum state transfer and beam-splitter operations, entanglement of motional modes, and Hong–Ou–Mandel-type interference. Additionally, we use the motional coupling to enable repeated non-destructive projective measurement of a trapped-ion motional state. Our work enhances the suitability of trapped-ion motion for continuous-variable quantum computing and error correction and may provide opportunities to improve the performance of motional cooling and motion-mediated entangling interactions.
AB - Precise quantum control and measurement of several harmonic oscillators, such as the modes of the electromagnetic field in a cavity or of mechanical motion, are key for their use as quantum platforms. The motional modes of trapped ions can be individually controlled and have good coherence properties. However, achieving high-fidelity two-mode operations and non-destructive measurements of the motional state has been challenging. Here we demonstrate the coherent exchange of single motional quanta between spectrally separated harmonic motional modes of a trapped-ion crystal. The timing, strength, and phase of the coupling are controlled through an oscillating electric potential with suitable spatial variation. Coupling rates that are much larger than decoherence rates enable demonstrations of high-fidelity quantum state transfer and beam-splitter operations, entanglement of motional modes, and Hong–Ou–Mandel-type interference. Additionally, we use the motional coupling to enable repeated non-destructive projective measurement of a trapped-ion motional state. Our work enhances the suitability of trapped-ion motion for continuous-variable quantum computing and error correction and may provide opportunities to improve the performance of motional cooling and motion-mediated entangling interactions.
UR - http://www.scopus.com/inward/record.url?scp=85199995186&partnerID=8YFLogxK
U2 - 10.48550/arXiv.2205.14841
DO - 10.48550/arXiv.2205.14841
M3 - Article
AN - SCOPUS:85199995186
VL - 20
SP - 1636
EP - 1641
JO - Nature physics
JF - Nature physics
SN - 1745-2473
IS - 10
ER -