Phonon-induced decoherence for a quantum dot spin qubit operated by Raman passage

Abstract

We study single-qubit gates performed via stimulated Raman adiabatic passage (STIRAP) on a spin qubit implemented in a quantum dot system in the presence of phonons. We analyze the interplay of various kinds of errors resulting from the carrier-phonon interaction as well as from quantum jumps related to nonadiabaticity and calculate the fidelity as a function of the pulse parameters. We give quantitative estimates for an InAs/GaAs system and identify the parameter values for which the error is considerably minimized, even to values below $10^{-4}$ per operation.

Final version; considerable extensions; 18 pages, 7 figures

References in corpus (15)

• Quantum Computation with Quantum Dots
• Electron spin decoherence in quantum dots due to interaction with nuclei
• Quantum-Information Processing with Semiconductor Macroatoms
• Phonon-induced decay of the electron spin in quantum dots
• Zeeman energy and spin relaxation in a one-electron quantum dot
• Spin-based all-optical quantum computation with quantum dots: understanding and suppressing decoherence
• Theory of Quantum Optical Control of Single Spin in a Quantum Dot
• Qubit Rotation by STIRAP
• Spin-based optical quantum gates via Pauli blocking in semiconductor quantum dots
• Dynamical description of quantum computing: generic nonlocality of quantum noise
• High-finesse optical quantum gates for electron spins in artificial molecules
• Coherent population transfer in coupled semiconductor quantum dots
• Optimal strategy for a single-qubit gate and trade-off between opposite types of decoherence
• Spin-based quantum information processing with semiconductor quantum dots and cavity QED
• Optical response and spin relaxation in semiconductor systems under excitation with arbitrary polarization

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• Partly noiseless encoding of quantum information in quantum dot arrays against phonon-induced pure dephasing
• Decoherence of adiabatically steered quantum systems
• Fidelity optimization for holonomic quantum gates in dissipative environments
• High fidelity all-optical control of quantum dot spins: detailed study of the adiabatic approach
• Theory of two-photon processes in quantum dots: coherent evolution and phonon-induced dephasing
• On the indistinguishability of Raman photons
• Phonon-induced dephasing of singlet-triplet superpositions in double quantum dots without spin-orbit coupling
• Robustness against parametric noise of non ideal holonomic gates
• Quantum heat engine operating between thermal and spin reservoirs
• Decoherence control by quantum decoherence itself
• Robust adiabatic approach to optical spin entangling in coupled quantum dots
• Interplay and optimization of decoherence mechanisms in the optical control of spin quantum bits implemented on a semiconductor quantum dot
• Precision of single-qubit gates based on Raman transitions
• Environmental noise reduction for holonomic quantum gates
• Controllable electron spin dephasing due to phonon state distinguishability in a coupled quantum dot system
• Optical initialization of hole spins in p-doped quantum dots: orientation efficiency and loss of coherence
• Dephasing of electrons in the Aharonov-Bohm interferometer with a single-molecular vibrational junction
• Phonon impact on the coherent control of quantum states in semiconductor quantum dots
• Indirect spin dephasing via charge state decoherence in optical control schemes in quantum dots
• Phonon influence on the measurement of spin states in double quantum dots using the quantum point contact
• Coherence limitations in the optical control of the singlet-triplet qubit in a quantum dot molecule
• Hybrid acousto-optical swing-up state control in a quantum dot