2009/09/24 by James A. Nesteroff, D. V. Averin, Dmitri V. Averin
Chemistry · Computer Science · Physics and Astronomy · #Charge qubit #Chemistry #Flux qubit #Mesoscopic physics #Phase qubit #Physics #Quantum #Quantum Information and Cryptography #Quantum Mechanics and Applications #Quantum and electron transport phenomena #Quantum mechanics #Quantum tunnelling #Qubit #Transformation (genetics) #Wave function #cond-mat.mes-hall
paper · pdf · doi:10.1088/0031-8949/2009/t137/014002
5 pages, 2 figures
arxiv created 2009/09/24 · openalex publication_date 2009/12/01 · arxiv updated 2015/05/14 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
The transformation cycle and associated inequality are suggested for the basic demonstration of the wavefunction reduction in a mesoscopic qubit in measurements with quantum-limited detectors. Violation of the inequality would show directly that the qubit state changes in a way dictated by the probabilistic nature of the wavefunction and inconsistent with the dynamics of the Schr"odinger equation: the qubit tunnels through an infinitely large barrier. Estimates show that the transformation cycle is within the reach of current experiments with superconducting qubits.