Approaching perfect microwave photodetection in circuit QED

Journal Article · Thu Dec 15 00:00:00 EST 2011 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.84.063834· OSTI ID:22095722

Peropadre, B.; Garcia-Ripoll, J. J. ^[1]; Romero, G. ^[2]; Johansson, G.; Wilson, C. M. ^[3]; Solano, E. ^[2]

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1. Instituto de Fisica Fundamental, CSIC, Calle Serrano 113-bis, E-28006 Madrid (Spain)
2. Departamento de Quimica Fisica, Universidad del Pais Vasco-Euskal Herriko Unibertsitatea, Apartado 644, E-48080 Bilbao (Spain)
3. Department of Microtechnology and Nanoscience, Chalmers University of Technology, Goeteborg (Sweden)

In order to apply all ideas from quantum optics to the field of quantum circuits, one of the missing ingredients is a high-efficiency single-photon detector. In this work we propose a design for such a device which successfully reaches 100% efficiency with only one absorber. Our photon detector consists of a three-level system (a phase qubit) coupled to a semi-infinite one-dimensional waveguide (a microwave transmission line) which performs highly efficient photodetection in a simplified manner as compared to previous proposals. Using the tools of quantum optics we extensively study the scattering properties of realistic wave packets against this device, thereby computing the efficiency of the detector. We find that the detector has many operating modes, can detect detuned photons, is robust against design imperfections, and can be made broadband by using more than one absorbing element in the design. Many of these ideas could be translated to other single-mode photonic or plasmonic waveguides interacting with three-level atoms or quantum dots.

• OSTI ID: 22095722
• Journal Information: Physical Review. A, Vol. 84, Issue 6; Other Information: (c) 2011 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 1050-2947
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
ATOMS
EFFICIENCY
ENERGY LEVELS
MICROWAVE RADIATION
ONE-DIMENSIONAL CALCULATIONS
OPTICS
PHOTODETECTORS
PHOTONS
PLASMONS
POWER TRANSMISSION LINES
QUANTUM DOTS
QUANTUM ELECTRODYNAMICS
QUBITS
SCATTERING
WAVE PACKETS
WAVEGUIDES