Details
| Original language | English |
|---|---|
| Pages (from-to) | 374-378 |
| Number of pages | 5 |
| Journal | OPTICA |
| Volume | 9 |
| Issue number | 4 |
| Publication status | Published - 28 Mar 2022 |
Abstract
Keywords
- Atomic spectroscopy, Chemistry, Electric fields, Fluorescence spectroscopy, Oscillator strengths, Quantum information processing
ASJC Scopus subject areas
- Materials Science(all)
- Electronic, Optical and Magnetic Materials
- Physics and Astronomy(all)
- Atomic and Molecular Physics, and Optics
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In: OPTICA, Vol. 9, No. 4, 28.03.2022, p. 374-378.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Optical Ramsey spectroscopy on a single molecule
AU - Wang, Yijun
AU - Bushmakin, Vladislav
AU - Stein, Guilherme Alexander
AU - Schell, Andreas W.
AU - Gerhardt, Ilja
N1 - Funding Information: Acknowledgment. We acknowledge discussions with Dr. J. Becker, Oxford. We thank Dr. Jörg Wrachtrup for his continuous support. Funding was provided by the German Federal Ministry of Education and Research, funding program quantum technologies - from basic research to market [13N15972]. Further funding sources: Deutsche Forschungsgemeinschaft; Germany’s Excellence Strategy; the COST Action “Nanoscale Quantum Optics” funded by COST.
PY - 2022/3/28
Y1 - 2022/3/28
N2 - Organic chemistry offers the potential to synthesize individual molecules for specific tasks in quantum information processing. One of their striking properties is the emission of single photons with nearly ideal coherence. Here, we implement Ramsey spectroscopy to measure the electronic state coherence of a single molecule. Conventionally, the emitter’s coherence is characterized by saturation or intensity auto-correlation measurements. However, both methods are under the steady influence of continuous interaction with the excitation laser. This influence can be eliminated by using a pump–probe sequence of two optical pulses to observe the decoherence. We have measured a near-transform-limited decoherence time of 17.6 ns, while the radiative lifetime is 10.1 ns. We also perform frequency-detuned excitation, gaining richer insights into the dephasing behavior of the molecule. The experiments exhibit that optical Ramsey spectroscopy is a promising tool for measuring the emitter’s coherence properties.
AB - Organic chemistry offers the potential to synthesize individual molecules for specific tasks in quantum information processing. One of their striking properties is the emission of single photons with nearly ideal coherence. Here, we implement Ramsey spectroscopy to measure the electronic state coherence of a single molecule. Conventionally, the emitter’s coherence is characterized by saturation or intensity auto-correlation measurements. However, both methods are under the steady influence of continuous interaction with the excitation laser. This influence can be eliminated by using a pump–probe sequence of two optical pulses to observe the decoherence. We have measured a near-transform-limited decoherence time of 17.6 ns, while the radiative lifetime is 10.1 ns. We also perform frequency-detuned excitation, gaining richer insights into the dephasing behavior of the molecule. The experiments exhibit that optical Ramsey spectroscopy is a promising tool for measuring the emitter’s coherence properties.
KW - Atomic spectroscopy
KW - Chemistry
KW - Electric fields
KW - Fluorescence spectroscopy
KW - Oscillator strengths
KW - Quantum information processing
UR - http://www.scopus.com/inward/record.url?scp=85128463860&partnerID=8YFLogxK
U2 - 10.1364/OPTICA.443727
DO - 10.1364/OPTICA.443727
M3 - Article
VL - 9
SP - 374
EP - 378
JO - OPTICA
JF - OPTICA
SN - 2334-2536
IS - 4
ER -