Room Temperature Quantum Coherent Revival in an Ensemble of Artificial Atoms
arXiv:2010.15198 · doi:10.1103/PhysRevResearch.3.033073
Abstract
We report a demonstration of the hallmark concept of quantum optics: periodic collapse and revival of quantum coherence (QCR) in a room temperature ensemble of quantum dots (QD). Control over quantum states, inherent to QCR, together with the dynamical QD properties present an opportunity for practical room temperature building blocks of quantum information processing. The amplitude decay of QCR is dictated by the QD homogeneous linewidth, thus, enabling its extraction in a double-pulse Ramsey-type experiment. The more common photon echo technique was also invoked and yielded the same linewidth. Measured electrical bias and temperature dependencies of the transverse relaxation times enable to determine the two main decoherence mechanisms: carrier-carrier and carrier-phonon scatterings.
References in corpus (13)
- Unpaired Majorana fermions in quantum wires
- Signatures of Majorana fermions in hybrid superconductor-semiconductor nanowire devices
- Evidence of Majorana fermions in an Al - InAs nanowire topological superconductor
- Observation of the fractional ac Josephson effect: the signature of Majorana particles
- Majorana bound states in a coupled quantum-dot hybrid-nanowire system
- Coherent generation of nonclassical light on a chip via photon-induced tunneling and blockade
- Deterministic Generation of a Cluster State of Entangled Photons
- Single-photon nonlinear optics with a quantum dot in a waveguide
- Multiple-pulse coherence enhancement of solid state spin qubits
- Echo spectroscopy and quantum stability of trapped atoms
- Time-resolved collapse and revival of the Kondo state near a quantum phase transition
- Nonlinear pulse propagation in InAs/InP quantum-dot optical amplifiers: Rabi-oscillations in the presence of non-resonant nonlinearities
- Ramsey fringes in a room temperature quantum dot semiconductor optical amplifier