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- The University of TokyoJP171 papers
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- NTT (Japan)JP60 papers
- Centre National de la Recherche ScientifiqueFR55 papers
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6 papers · 1 filter
Schrodinger cats and their power for quantum information processing
A. Gilchrist, Kae Nemoto, W. J. Munro +4
We outline a toolbox comprised of passive optical elements, single photon detection and superpositions of coherent states (Schrodinger cat states). Such a toolbox is a powerful col…
Quantum coherence: myth or fact?
Kae Nemoto, Samuel L. Braunstein
It has recently been argued that the inability to measure the absolute phase of an electromagnetic field prohibits the representation of a laser's output as a quantum optical coher…
A high-efficiency quantum non-demolition single photon number resolving detector
W. J. Munro, Kae Nemoto, R. G. Beausoleil +1
We discuss a novel approach to the problem of creating a photon number resolving detector using the giant Kerr nonlinearities available in electromagnetically induced transparency.…
Quantum coherence in the presence of unobservable quantities
Kae Nemoto, Samuel L. Braunstein
State representations summarize our knowledge about a system. When unobservable quantities are introduced the state representation is typically no longer unique. However, this non-…
Entanglement Cost of Antisymmetric States and Additivity of Capacity of Some Quantum Channel
Keiji Matsumoto, Fumitaka Yura
We study the entanglement cost of the states in the contragredient space, which consists of -dimensional systems. The cost is always ebits when the state…
Multi-TeV Gamma-Ray Flares from Markarian 421 in 2000 and 2001 Observed with the Tibet Air Shower Array
M. Amenomori
Several strong TeV gamma-ray flares were detected from Markarian 421 in the years 2000 and 2001 by the Tibet III air shower array at a level of statistical significance of 5.1 sigm…