Vacuum Rabi Oscillations in a Macroscopic Superconducting QubitLCOscillator System

2005/10/18 by Jonas Johansson, J. Johansson, Shiro Saito +10 · 7 citations
Computer Science · Physics and Astronomy · #Quantum Information and Cryptography #Quantum and electron transport phenomena #Strong Light-Matter Interactions #cond-mat.mes-hall #cond-mat.supr-con

paper · pdf · doi:10.1103/physrevlett.96.127006

Submitted to Phys. Rev. Lett

arxiv created 2005/10/18 · openalex publication_date 2006/03/31 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28

Abstract

We have observed the coherent exchange of a single energy quantum between a flux qubit and a superconducting LC circuit acting as a quantum harmonic oscillator. The exchange of an energy quantum is known as the vacuum Rabi oscillation: the qubit is oscillating between the excited state and the ground state and the oscillator between the vacuum state and the first excited state. We also show that we can detect the state of the oscillator with the qubit and thereby obtained evidence of level quantization of the LC circuit. Our results support the idea of using oscillators as couplers of solid-state qubits.

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
• Vacuum Rabi splitting with a single quantum dot in a photonic crystal nanocavity.
• Manipulating quantum entanglement with atoms and photons in a cavity
• Circuit Quantum Electrodynamics: Coherent Coupling of a Single Photon to a Cooper Pair Box
• Strong coupling in a single quantum dot–semiconductor microcavity system

Cited by

• Phase diffusion and locking in single-qubit lasers
• Dephasing of a Superconducting Flux Qubit
• Nonlinear resonant behavior of a dispersive readout circuit for a superconducting flux qubit
• Interqubit coupling mediated by a high-excitation-energy quantum object
• Phase coherent dynamics of a superconducting flux qubit with capacitive bias readout
• Circuit QED with a flux qubit strongly coupled to a coplanar transmission line resonator
• Theory of two-dimensional macroscopic quantum tunneling inYBa2Cu3O7−δJosephson junctions coupled to an LC circuit