Readout methods and devices for Josephson-junction-based solid-state qubits
arXiv:cond-mat/0602585 · doi:10.1088/0953-8984/18/21/S14
Abstract
We discuss the current situation concerning measurement and readout of Josephson-junction based qubits. In particular we focus attention of dispersive low-dissipation techniques involving reflection of radiation from an oscillator circuit coupled to a qubit, allowing single-shot determination of the state of the qubit. In particular we develop a formalism describing a charge qubit read out by measuring its effective (quantum) capacitance. To exemplify, we also give explicit formulas for the readout time.
20 pages, 7 figures. To be published in J. Phys.: Condensed Matter, 18 (2006) Special issue: Quantum computing
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- Two-resonator circuit QED: A superconducting quantum switch
- Selective coupling of superconducting qubits via tunable stripline cavity
- Scattering of coherent states on a single artificial atom
- Quantum analysis of a linear DC SQUID mechanical displacement detector
- Circuit-QED with phase-biased Josephson weak links
- Fast quantum limited read-out of a superconducting qubit using a slow oscillator
- Inverse Landau-Zener-Stuckelberg problem for qubit-resonator systems
- Multiphoton transitions in Josephson-junction qubits (Review Article)
- From adiabatic to dispersive readout of quantum circuits
- Quantum simulation of Anderson and Kondo lattices with superconducting qubits
- Quantum analysis of a nonlinear microwave cavity-embedded dc SQUID displacement detector
- Qubit-based memcapacitors and meminductors
- The information about the state of a qubit gained by a weakly coupled detector
- Weak and strong measurement of a qubit using a switching-based detector
- Circuit quantum electrodynamic model of dissipative-dispersive Josephson traveling-wave parametric amplifiers
- Displacement Detection with a Vibrating RF SQUID: Beating the Standard Linear Limit
- The information about the state of a charge qubit gained by a weakly coupled quantum point contact
- Non-galvanic calibration and operation of a quantum dot thermometer
- Low-temperature tunable radio-frequency resonator for sensitive dispersive readout of nanoelectronic devices
- Probing the quantum coherence of a nanomechanical resonator using a superconducting qubit II: Implementation
- Simultaneous readout of two charge qubits
- Transitional dynamics of a phase qubit-resonator system: requirements for fast readout of a phase qubit