1
|
Koong ZX, Scerri E, Rambach M, Cygorek M, Brotons-Gisbert M, Picard R, Ma Y, Park SI, Song JD, Gauger EM, Gerardot BD. Coherent Dynamics in Quantum Emitters under Dichromatic Excitation. Phys Rev Lett 2021; 126:047403. [PMID: 33576652 DOI: 10.1103/physrevlett.126.047403] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/04/2020] [Accepted: 01/04/2021] [Indexed: 06/12/2023]
Abstract
We characterize the coherent dynamics of a two-level quantum emitter driven by a pair of symmetrically detuned phase-locked pulses. The promise of dichromatic excitation is to spectrally isolate the excitation laser from the quantum emission, enabling background-free photon extraction from the emitter. While excitation is not possible without spectral overlap between the exciting pulse and the quantum emitter transition for ideal two-level systems due to cancellation of the accumulated pulse area, we find that any additional interactions that interfere with cancellation of the accumulated pulse area may lead to a finite stationary population inversion. Our spectroscopic results of a solid-state two-level system show that, while coupling to lattice vibrations helps to improve the inversion efficiency up to 50% under symmetric driving, coherent population control and a larger amount of inversion are possible using asymmetric dichromatic excitation, which we achieve by adjusting the ratio of the intensities between the red- and blue-detuned pulses. Our measured results, supported by simulations using a real-time path-integral method, offer a new perspective toward realizing efficient, background-free photon generation and extraction.
Collapse
Affiliation(s)
- Z X Koong
- SUPA, Institute of Photonics and Quantum Sciences, Heriot-Watt University, Edinburgh EH14 4AS, United Kingdom
| | - E Scerri
- SUPA, Institute of Photonics and Quantum Sciences, Heriot-Watt University, Edinburgh EH14 4AS, United Kingdom
| | - M Rambach
- SUPA, Institute of Photonics and Quantum Sciences, Heriot-Watt University, Edinburgh EH14 4AS, United Kingdom
| | - M Cygorek
- SUPA, Institute of Photonics and Quantum Sciences, Heriot-Watt University, Edinburgh EH14 4AS, United Kingdom
| | - M Brotons-Gisbert
- SUPA, Institute of Photonics and Quantum Sciences, Heriot-Watt University, Edinburgh EH14 4AS, United Kingdom
| | - R Picard
- SUPA, Institute of Photonics and Quantum Sciences, Heriot-Watt University, Edinburgh EH14 4AS, United Kingdom
| | - Y Ma
- College of Optoelectronic Engineering, Chongqing University of Posts and Telecommunications, Chongqing 400065, China
| | - S I Park
- Center for Opto-Electronic Materials and Devices Research, Korea Institute of Science and Technology, Seoul 02792, Republic of Korea
| | - J D Song
- Center for Opto-Electronic Materials and Devices Research, Korea Institute of Science and Technology, Seoul 02792, Republic of Korea
| | - E M Gauger
- SUPA, Institute of Photonics and Quantum Sciences, Heriot-Watt University, Edinburgh EH14 4AS, United Kingdom
| | - B D Gerardot
- SUPA, Institute of Photonics and Quantum Sciences, Heriot-Watt University, Edinburgh EH14 4AS, United Kingdom
| |
Collapse
|
2
|
Baek H, Brotons-Gisbert M, Koong ZX, Campbell A, Rambach M, Watanabe K, Taniguchi T, Gerardot BD. Highly energy-tunable quantum light from moiré-trapped excitons. Sci Adv 2020; 6:6/37/eaba8526. [PMID: 32917702 PMCID: PMC7486092 DOI: 10.1126/sciadv.aba8526] [Citation(s) in RCA: 71] [Impact Index Per Article: 17.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/10/2020] [Accepted: 07/24/2020] [Indexed: 05/20/2023]
Abstract
Photon antibunching, a hallmark of quantum light, has been observed in the correlations of light from isolated atomic and atomic-like solid-state systems. Two-dimensional semiconductor heterostructures offer a unique method to create a quantum light source: Moiré trapping potentials for excitons are predicted to create arrays of quantum emitters. While signatures of moiré-trapped excitons have been observed, their quantum nature has yet to be confirmed. Here, we report photon antibunching from single moiré-trapped interlayer excitons in a heterobilayer. Via magneto-optical spectroscopy, we demonstrate that the discrete anharmonic spectra arise from bound band-edge electron-hole pairs trapped in moiré potentials. Last, we exploit the large permanent dipole of interlayer excitons to achieve large direct current (DC) Stark tuning up to 40 meV. Our results confirm the quantum nature of moiré-confined excitons and open opportunities to investigate their inhomogeneity and interactions between the emitters or energetically tune single emitters into resonance with cavity modes.
Collapse
Affiliation(s)
- H Baek
- Institute of Photonics and Quantum Sciences, SUPA, Heriot-Watt University, Edinburgh EH14 4AS, UK.
| | - M Brotons-Gisbert
- Institute of Photonics and Quantum Sciences, SUPA, Heriot-Watt University, Edinburgh EH14 4AS, UK
| | - Z X Koong
- Institute of Photonics and Quantum Sciences, SUPA, Heriot-Watt University, Edinburgh EH14 4AS, UK
| | - A Campbell
- Institute of Photonics and Quantum Sciences, SUPA, Heriot-Watt University, Edinburgh EH14 4AS, UK
| | - M Rambach
- Institute of Photonics and Quantum Sciences, SUPA, Heriot-Watt University, Edinburgh EH14 4AS, UK
| | - K Watanabe
- National Institute for Materials Science, Tsukuba, Japan
| | - T Taniguchi
- National Institute for Materials Science, Tsukuba, Japan
| | - B D Gerardot
- Institute of Photonics and Quantum Sciences, SUPA, Heriot-Watt University, Edinburgh EH14 4AS, UK.
| |
Collapse
|
3
|
Koong ZX, Scerri D, Rambach M, Santana TS, Park SI, Song JD, Gauger EM, Gerardot BD. Fundamental Limits to Coherent Photon Generation with Solid-State Atomlike Transitions. Phys Rev Lett 2019; 123:167402. [PMID: 31702372 DOI: 10.1103/physrevlett.123.167402] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/11/2019] [Revised: 07/19/2019] [Indexed: 06/10/2023]
Abstract
Coherent generation of indistinguishable single photons is crucial for many quantum communication and processing protocols. Solid-state realizations of two-level atomic transitions or three-level spin-Λ systems offer significant advantages over their atomic counterparts for this purpose, albeit decoherence can arise due to environmental couplings. One popular approach to mitigate dephasing is to operate in the weak-excitation limit, where the excited-state population is minimal and coherently scattered photons dominate over incoherent emission. Here we probe the coherence of photons produced using two-level and spin-Λ solid-state systems. We observe that the coupling of the atomiclike transitions to the vibronic transitions of the crystal lattice is independent of the driving strength, even for detuned excitation using the spin-Λ configuration. We apply a polaron master equation to capture the non-Markovian dynamics of the vibrational manifolds. These results provide insight into the fundamental limitations to photon coherence from solid-state quantum emitters.
Collapse
Affiliation(s)
- Z X Koong
- SUPA, Institute of Photonics and Quantum Sciences, Heriot-Watt University, Edinburgh EH14 4AS, Scotland, United Kingdom
| | - D Scerri
- SUPA, Institute of Photonics and Quantum Sciences, Heriot-Watt University, Edinburgh EH14 4AS, Scotland, United Kingdom
| | - M Rambach
- SUPA, Institute of Photonics and Quantum Sciences, Heriot-Watt University, Edinburgh EH14 4AS, Scotland, United Kingdom
| | - T S Santana
- Departamento de Física, Universidade Federal de Sergipe, Sergipe, 49100-000, Brazil
| | - S I Park
- Center for Opto-Electronic Materials and Devices Research, Korea Institute of Science and Technology, Seoul 02792, Republic of Korea
| | - J D Song
- Center for Opto-Electronic Materials and Devices Research, Korea Institute of Science and Technology, Seoul 02792, Republic of Korea
| | - E M Gauger
- SUPA, Institute of Photonics and Quantum Sciences, Heriot-Watt University, Edinburgh EH14 4AS, Scotland, United Kingdom
| | - B D Gerardot
- SUPA, Institute of Photonics and Quantum Sciences, Heriot-Watt University, Edinburgh EH14 4AS, Scotland, United Kingdom
| |
Collapse
|
4
|
Lanyon BP, Hempel C, Nigg D, Müller M, Gerritsma R, Zähringer F, Schindler P, Barreiro JT, Rambach M, Kirchmair G, Hennrich M, Zoller P, Blatt R, Roos CF. Universal Digital Quantum Simulation with Trapped Ions. Science 2011; 334:57-61. [PMID: 21885735 DOI: 10.1126/science.1208001] [Citation(s) in RCA: 422] [Impact Index Per Article: 32.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Affiliation(s)
- B. P. Lanyon
- Institut für Quantenoptik und Quanteninformation, Österreichische Akademie der Wissenschaften, Otto-Hittmair-Platz 1, A-6020 Innsbruck, Austria
- Institut für Experimentalphysik, University of Innsbruck, Technikerstr. 25, A-6020 Innsbruck, Austria
| | - C. Hempel
- Institut für Quantenoptik und Quanteninformation, Österreichische Akademie der Wissenschaften, Otto-Hittmair-Platz 1, A-6020 Innsbruck, Austria
- Institut für Experimentalphysik, University of Innsbruck, Technikerstr. 25, A-6020 Innsbruck, Austria
| | - D. Nigg
- Institut für Experimentalphysik, University of Innsbruck, Technikerstr. 25, A-6020 Innsbruck, Austria
| | - M. Müller
- Institut für Quantenoptik und Quanteninformation, Österreichische Akademie der Wissenschaften, Otto-Hittmair-Platz 1, A-6020 Innsbruck, Austria
- Institut für Theoretische Physik, University of Innsbruck, Technikerstr. 25, A-6020 Innsbruck, Austria
| | - R. Gerritsma
- Institut für Quantenoptik und Quanteninformation, Österreichische Akademie der Wissenschaften, Otto-Hittmair-Platz 1, A-6020 Innsbruck, Austria
- Institut für Experimentalphysik, University of Innsbruck, Technikerstr. 25, A-6020 Innsbruck, Austria
| | - F. Zähringer
- Institut für Quantenoptik und Quanteninformation, Österreichische Akademie der Wissenschaften, Otto-Hittmair-Platz 1, A-6020 Innsbruck, Austria
- Institut für Experimentalphysik, University of Innsbruck, Technikerstr. 25, A-6020 Innsbruck, Austria
| | - P. Schindler
- Institut für Experimentalphysik, University of Innsbruck, Technikerstr. 25, A-6020 Innsbruck, Austria
| | - J. T. Barreiro
- Institut für Experimentalphysik, University of Innsbruck, Technikerstr. 25, A-6020 Innsbruck, Austria
| | - M. Rambach
- Institut für Quantenoptik und Quanteninformation, Österreichische Akademie der Wissenschaften, Otto-Hittmair-Platz 1, A-6020 Innsbruck, Austria
- Institut für Experimentalphysik, University of Innsbruck, Technikerstr. 25, A-6020 Innsbruck, Austria
| | - G. Kirchmair
- Institut für Quantenoptik und Quanteninformation, Österreichische Akademie der Wissenschaften, Otto-Hittmair-Platz 1, A-6020 Innsbruck, Austria
- Institut für Experimentalphysik, University of Innsbruck, Technikerstr. 25, A-6020 Innsbruck, Austria
| | - M. Hennrich
- Institut für Experimentalphysik, University of Innsbruck, Technikerstr. 25, A-6020 Innsbruck, Austria
| | - P. Zoller
- Institut für Quantenoptik und Quanteninformation, Österreichische Akademie der Wissenschaften, Otto-Hittmair-Platz 1, A-6020 Innsbruck, Austria
- Institut für Theoretische Physik, University of Innsbruck, Technikerstr. 25, A-6020 Innsbruck, Austria
| | - R. Blatt
- Institut für Quantenoptik und Quanteninformation, Österreichische Akademie der Wissenschaften, Otto-Hittmair-Platz 1, A-6020 Innsbruck, Austria
- Institut für Experimentalphysik, University of Innsbruck, Technikerstr. 25, A-6020 Innsbruck, Austria
| | - C. F. Roos
- Institut für Quantenoptik und Quanteninformation, Österreichische Akademie der Wissenschaften, Otto-Hittmair-Platz 1, A-6020 Innsbruck, Austria
- Institut für Experimentalphysik, University of Innsbruck, Technikerstr. 25, A-6020 Innsbruck, Austria
| |
Collapse
|