Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Log inSign up
Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Blog
Job Board
Q3AS

© 2026 Aqora Quantum S.A.S.

TermsPrivacyLegal Notice

Conference on Lasers and Electro-Optics Pacific Rim (CLEO-PR)

Exciton Rabi oscillation in single quantum dot: temporal measurement of oscillation and corresponding energy level splitting

Hidehiko Kamada, H. Ando, T. Takagahara, Jiro Temmyo

Published Nov 13, 2002• 0 citations
Publisher

Abstract

A spectroscopic method, which enables characterization of a single isolated quantum dot and quantum wave function interferometry is applied to exciton discrete excited state in InGaAs quantum dot. Long coherence of zero-dimensional excitonic states made possible the observe coherent population flopping in a 0D excitonic two-level system in a time-domain interferometric measurement and corresponding energy splitting is also manifested in an energy-domain measurement.

DOI
10.1109/cleopr.2001.971125

Related papers

Exciton Rabi Oscillation in a Single Quantum Dot

Hidehiko Kamada, Hideki Gotoh, Jiro Temmyo +2 more

A spectroscopic method, which enables characterization of a single isolated quantum dot and a quantum wave function interferometry, is applied to an exciton discrete excited state in an InGaAs quantum dot. Long coherence of zero-dimensional excitonic states made possible the observation of coherent population flopping in a 0D excitonic two-level system in a time-domain interferometric measurement. Corresponding energy splitting is also manifested in an energy-domain measurement.

Physical Review Letters•Nov 16, 2001•512 citations

Exciton Rabi Oscillation in Single Isolated Quantum Dots

Hidehiko Kamada, Hideki Gotoh, Jiro Temmyo +2 more

The Rabi population oscillation of a single excitonic two-level system in an isolated InxGa1—xAs quantum dot was examined by quantum wave function interferometry in the time domain. The corresponding energy splitting was also confirmed in an energy-domain measurement. Two-pulse dipole interference on an excited excitonic state revealed a long-lived coherence of zero-dimensional excitonic states and demonstrated coherent population flopping under a strong optical field.

physica status solidi (a)•Apr 1, 2002•7 citations

Quantum gate operation of exciton qubits in semiconductor quantum dots

Hidehiko Kamada, Hideki Gotoh, Hiroaki Ando +2 more

Potential application of elementary excitation in semiconductor quantum dot to quantum computation is discussed. Construction of scalable hardware and all optical implementation of logical gate that exploits discrete nature of electron-hole states and their well concentrated oscillator strenth for ultrafast gate operation are proposed. Rabi population oscillation of an excitonic two-level system in an isolated single InxGa1-xAs quantum dot is manifested by a quantum wave function interferometry in time domain, demonstrating a long lived coherence of zero-dimensional excitonic states and revealed the coherent population flopping under strong optical field. A phase-sensitive coherent gate operation on single-dot exciton qubit is demonstrated.

Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE•Jun 2, 2003•0 citations

Exciton Rabi oscillation: coherently manipulate zero-dimensional quantum states by light

Hidehiko Kamada, Hideki Gotoh, H. Ando

Summary form only given. Optical Rabi oscillations are the most essential physics that coherent optical control of the quantum states relies on. Observation of the exciton population flopping thus can be a first step to the coherent control. In this contribution, we report the Rabi oscillation of an isolated excitonic two-level system in a disk-shaped In/sub x/Ga/sub 1-x/As quantum dot. Control of population and phase of single-dot exciton is demonstrated.

Quantum Electronics and Laser Science Conference•Jun 25, 2003•0 citations

Theory of excitonic Rabi flopping and quantum interference in single quantum dots

T. Takagahara

Summary form only given. Semiconductor quantum dots are attracting much interest as a candidate to implement the quantum information processing and the quantum computation. In order to examine the possibility of the quantum state manipulation, we study the excitonic Rabi flopping and a new type of quantum interference phenomena in semiconductor quantum dots. One of the most striking manifestation of the quantum coherence is the Rabi flopping. The observation of the excitonic Rabi splitting in an InGaAs quantum dot was reported recently. Under the strong excitation of an excited exciton state in a single quantum dot, the luminescence from the exciton ground state shows a doublet splitting. This splitting can be interpreted in the dressed exciton picture. Namely, under the strong and resonant excitation of a particular exciton state, the ground state of the system splits into two levels. Then the transition from the exciton ground state to the split ground state results in the doublet structure of the emission spectrum.

Quantum Electronics and Laser Science Conference•Nov 13, 2002•2 citations

Rabi oscillations of a quantum dot exciton coupled to acoustic phonons: coherence and population readout

Daniel Wigger, Christian Schneider, Stefan Gerhardt +4 more

While the advanced coherent control of qubits is now routinely carried out in low frequency (GHz) systems like single spins, it is far more challenging to achieve for two-level systems in the optical domain. This is because the latter evolve typically in the THz range, calling for tools of ultrafast, coherent, nonlinear optics. Using four-wave mixing micro-spectroscopy, we here measure the optically driven dynamics of a single exciton quantum state confined in a semiconductor quantum dot. In a combined experimental and theoretical approach, we reveal the intrinsic Rabi oscillation dynamics by monitoring both central exciton quantities, i.e., its occupation and the microscopic coherence, as resolved by the four-wave mixing technique. In the frequency domain this oscillation generates the Autler-Townes splitting of the light-exciton dressed states, directly seen in the four-wave mixing spectra. We further demonstrate that the coupling to acoustic phonons strongly influences the FWM dynamics on the picosecond timescale, because it leads to transitions between the dressed states.

arXiv:1809.10549•Optica•Nov 6, 2018•25 citations
A spectroscopic method, which enables characterization of a single isolated quantum dot and quantum wave function interferometry is applied to exciton discrete excited state in InGaAs quantum dot. Long coherence of zero-dimensional excitonic states made possible the observe coherent population flopping in a 0D excitonic two-level system in a time-domain interferometric measurement and corresponding energy splitting is also manifested in an energy-domain measurement.
Potential application of elementary excitation in semiconductor quantum dot to quantum computation is discussed. Construction of scalable hardware and all optical implementation of logical gate that exploits discrete nature of electron-hole states and their well concentrated oscillator strenth for ultrafast gate operation are proposed. Rabi population oscillation of an excitonic two-level system in an isolated single InxGa1-xAs quantum dot is manifested by a quantum wave function interferometry in time domain, demonstrating a long lived coherence of zero-dimensional excitonic states and revealed the coherent population flopping under strong optical field. A phase-sensitive coherent gate operation on single-dot exciton qubit is demonstrated.
Summary form only given. Semiconductor quantum dots are attracting much interest as a candidate to implement the quantum information processing and the quantum computation. In order to examine the possibility of the quantum state manipulation, we study the excitonic Rabi flopping and a new type of quantum interference phenomena in semiconductor quantum dots. One of the most striking manifestation of the quantum coherence is the Rabi flopping. The observation of the excitonic Rabi splitting in an InGaAs quantum dot was reported recently. Under the strong excitation of an excited exciton state in a single quantum dot, the luminescence from the exciton ground state shows a doublet splitting. This splitting can be interpreted in the dressed exciton picture. Namely, under the strong and resonant excitation of a particular exciton state, the ground state of the system splits into two levels. Then the transition from the exciton ground state to the split ground state results in the doublet structure of the emission spectrum.
While the advanced coherent control of qubits is now routinely carried out in low frequency (GHz) systems like single spins, it is far more challenging to achieve for two-level systems in the optical domain. This is because the latter evolve typically in the THz range, calling for tools of ultrafast, coherent, nonlinear optics. Using four-wave mixing micro-spectroscopy, we here measure the optically driven dynamics of a single exciton quantum state confined in a semiconductor quantum dot. In a combined experimental and theoretical approach, we reveal the intrinsic Rabi oscillation dynamics by monitoring both central exciton quantities, i.e., its occupation and the microscopic coherence, as resolved by the four-wave mixing technique. In the frequency domain this oscillation generates the Autler-Townes splitting of the light-exciton dressed states, directly seen in the four-wave mixing spectra. We further demonstrate that the coupling to acoustic phonons strongly influences the FWM dynamics on the picosecond timescale, because it leads to transitions between the dressed states.