Decoherence Rate of Semiconductor Charge Qubit Coupled to Acoustic Phonon Reservoir

Abstract

We analyze decoherence of an electron in a double-dot due to the interaction with acoustic phonons. For large tunneling rates between the quantum dots, the main contribution to decoherence comes from the phonon emission relaxation processes, while for small tunneling rates, the virtual-phonon, dephasing processes dominate. Our results show that in common semiconductors, such as Si and GaAs, the latter mechanism determines the upper limit for the double-dot charge qubit performance measure.

4 pages, 2 figures, typos corrected, fig. 2 replaced by the improved version

References in corpus (17)

• Quantum Computation with Quantum Dots
• The Physical Implementation of Quantum Computation
• Conditional Quantum Dynamics and Logic Gates
• Quantum Computers and Dissipation
• Electron Spin Resonance Transistors for Quantum Computing in Silicon-Germanium Heterostructures
• Coherent manipulation of electronic states in a double quantum dot
• Spontaneous Emission Spectrum in Double Quantum Dot Devices
• Quantum Information in Semiconductors: Noiseless Encoding in a Quantum-Dot Array
• Spontaneous emission of phonons by coupled quantum dots
• Quantum Computation in Quantum-Hall Systems
• Adiabatic Transfer of Electrons in Coupled Quantum Dots
• Relaxation and Zeno effect in qubit measurements
• Measuring the decoherence rate in a semiconductor charge qubit
• Adiabatic Decoherence
• Control of Dephasing and Phonon Emission in Coupled Quantum Dots
• Adiabatic steering and determination of dephasing rates in double dot qubits
• Measures of Decoherence

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