Telegraph noise effects on two charge-qubits in double quantum dots
arXiv:1312.0427 · doi:10.1103/PhysRevA.89.012330
Abstract
We analyze theoretically the decoherence of two interacting electrons in a double self-assembled quantum dot due to a random telegraph noise. For this purpose we have examined the pure dephasing rate by evaluating the decoherence factor. This latter has been shown to be different from that calculated within the Gaussian approximation in the strong coupling regime. In order to determine the influence of the random telegraph noise on the entanglement of the system states, the concurrence, the populations and the entropy are evaluated as well. Our results show that telegraph noise can severely impact the coherence of charges qubits.
7 pages, 5 figures
References in corpus (8)
- How to Enhance Dephasing Time in Superconducting Qubits
- Decoherence of flux qubits due to 1/f flux noise
- Quantum Coherence in a One-Electron Semiconductor Charge Qubit
- Low-frequency noise as a source of dephasing of a qubit
- Decoherence in qubits due to low-frequency noise
- Decoherence Rate of Semiconductor Charge Qubit Coupled to Acoustic Phonon Reservoir
- Decoherence of a qubit by non-Gaussian noise at an arbitrary working point
- Non-Gaussian dephasing in flux qubits due to 1/f-noise
Cited by in corpus (5)
- Noise-induced quantum synchronization
- Quantum dephasing induced by non-Markovian random telegraph noise
- Comphy v3.0 -- A Compact-Physics Framework for Modeling Charge Trapping Related Reliability Phenomena in MOS Devices
- Oscillating properties of a two-electron quantum dot in the presence of a magnetic field
- 3D two-electron double quantum dot: comparison between the behavior of some physical quantities under two different confinement potentials in the presence of a magnetic field