Partly noiseless encoding of quantum information in quantum dot arrays against phonon-induced pure dephasing

Abstract

We show that pure dephasing of a quantum dot charge (excitonic) qubit may be reduced for sufficiently slow gating by collectively encoding quantum information in an array of quantum dots. We study the role of the size and structure of the array and of the exciton lifetime for the resulting total error of a single-qubit operation.

Final version; 10 pages, 8 figures

References in corpus (21)

• Noiseless Quantum Codes
• Quantum Computing with Very Noisy Devices
• Quantum-Information Processing with Semiconductor Macroatoms
• Universal Fault-Tolerant Computation on Decoherence-Free Subspaces
• Spin-based all-optical quantum computation with quantum dots: understanding and suppressing decoherence
• Dephasing in Quantum Dots: Quadratic Coupling to Acoustic Phonons
• Quantum Information in Semiconductors: Noiseless Encoding in a Quantum-Dot Array
• Theory of Quantum Optical Control of Single Spin in a Quantum Dot
• Optical Schemes for Quantum Computation in Quantum Dot Molecules
• 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
• Decoherence-Free Subspaces for Multiple-Qubit Errors: (I) Characterization
• Decoherence-Free Subspaces for Multiple-Qubit Errors: (II) Universal, Fault-Tolerant Quantum Computation
• Quantum control of electron--phonon scatterings in artificial atoms
• Optimal strategy for a single-qubit gate and trade-off between opposite types of decoherence
• Reducing decoherence of the confined exciton state in a quantum dot by pulse-sequence control
• Phonon-induced decoherence for a quantum dot spin qubit operated by Raman passage
• Subdecoherent Information Encoding in a Quantum-Dot Array
• Resonant Transfer of Excitons and Quantum Computation
• "Which path" decoherence in quantum dot experiments

Cited by in corpus (8)

• Collective fluorescence and decoherence of a few nearly identical quantum dots
• Theory of two-photon processes in quantum dots: coherent evolution and phonon-induced dephasing
• Decoherence control by quantum decoherence itself
• Interplay and optimization of decoherence mechanisms in the optical control of spin quantum bits implemented on a semiconductor quantum dot
• Pure Dephasing of Light-Matter Systems in the Ultrastrong and Deep-Strong Coupling Regimes
• Interplay of coupling and superradiant emmision in the optical response of a double quantum dot
• Dike states in multiple quantum dots
• Indirect spin dephasing via charge state decoherence in optical control schemes in quantum dots