Interaction-Free Measurements with Superconducting Qubits

2006/11/01 by G. S. Paraoanu · 2 citations
Computer Science · Physics and Astronomy · #Charge qubit #Flux qubit #Josephson effect #Phase qubit #Physics #Pi Josephson junction #Pulse (music) #Quantum #Quantum Computing Algorithms and Architecture #Quantum Information and Cryptography #Quantum and electron transport phenomena #Quantum mechanics #Qubit #Superconducting quantum computing #Superconducting tunnel junction #Superconductivity #Voltage #cond-mat.supr-con #quant-ph

paper · pdf · doi:10.1103/physrevlett.97.180406

published as Phys. Rev. Lett. 97, 180406 (2006) · 4 pages, 2 figures

openalex publication_date 2006/11/01 · arxiv created 2008/04/03 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

An interaction-free measurement protocol is described for a quantum circuit consisting of a superconducting qubit and a readout Josephson junction. By measuring the state of the qubit, one can ascertain the presence of a current pulse through the circuit at a previous time without any energy exchange between the qubit and the pulse.

Citations

• Coherent control of macroscopic quantum states in a single-Cooper-pair box
• Coherent Quantum Dynamics of a Superconducting Flux Qubit
• Demonstration of conditional gate operation using superconducting charge qubits
• Coherent dynamics of a Josephson charge qubit
• Josephson-junction qubits with controlled couplings
• Quantum-state engineering with Josephson-junction devices
• Interaction-Free Measurement
• Quantum Mechanical Interaction-Free Measurements
• “Interaction-free” imaging
• High-efficiency quantum interrogation measurements via the quantum Zeno effect

Cited by

• Quantum entanglement via two-qubit quantum Zeno dynamics
• Elitzur–Vaidman bomb tester [wikipedia]