• Publications
  • Influence
Purification of noisy entanglement and faithful teleportation via noisy channels.
Two separated observers, by applying local operations to a supply of not-too-impure entangled states ({\em e.g.} singlets shared through a noisy channel), can prepare a smaller number of entangledExpand
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Quantum coding.
  • Schumacher
  • Medicine
  • Physical review. A, Atomic, molecular, and…
  • 1995
A theorem is proven for quantum information theory that is analogous to the noiseless coding theorem of classical information theory. In the quantum result, the von Neumann entropy S of the densityExpand
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Concentrating partial entanglement by local operations.
If two separated observers are supplied with entanglement, in the form of n pairs of particles in identical partly entangled pure states, one member of each pair being given to each observer, theyExpand
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Sending entanglement through noisy quantum channels.
  • Schumacher
  • Physics, Medicine
  • Physical review. A, Atomic, molecular, and…
  • 1 October 1996
This paper addresses some general questions of quantum information theory arising from the transmission of quantum entanglement through (possibly noisy) quantum channels. A pure entangled state isExpand
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Quantum data processing and error correction.
  • Schumacher, Nielsén
  • Physics, Medicine
  • Physical review. A, Atomic, molecular, and…
  • 22 April 1996
This paper investigates properties of noisy quantum information channels. We define a quantity called {ital coherent} {ital information}, which measures the amount of quantum information conveyed inExpand
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Noncommuting mixed states cannot be broadcast.
We show that, given a general mixed state for a quantum system, there are no physical means for {ital broadcasting} that state onto two separate quantum systems, even when the state need only beExpand
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A synthesis of biological and physical processes affecting the feeding environment of larval walleye pollock (Theragra chalcogramma) in the eastern Bering Sea
Biological and physical phenomena that affect conditions for larval survival and eventual recruitment differ in the oceanic and shelf regions. In the oceanic region, eddies are a common feature.Expand
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Classical information capacity of a quantum channel.
We consider the transmission of classical information over a quantum channel. The channel is defined by an ``alphabet'' of quantum states, e.g., certain photon polarizations, together with aExpand
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Above-threshold ionization with subpicosecond laser pulses.
Above-threshold ionization (ATI) is investigated in xenon with pulses of light at 616 nm ranging from 15 to 0.4 psec. Significant energy shifts and broadenings of the ATI peaks are observed. ForExpand
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Limitation on the amount of accessible information in a quantum channel.
We prove a new result limiting the amount of accessible information in a quantum channel. This generalizes Kholevo{close_quote}s theorem and implies it as a simple corollary. Our proof uses theExpand
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