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Is It Possible to Use a Quantum Eraser to Send Binary Data to a Remote Location?

The possibility of performing quantum erasure using a single form of quantum erasure in an experiment is explored. This contrasts with the two possibilities for quantum erasure usually employed (e.g., whether a photon shed by an atom is eliminated or is instead just not subject to specification rega...

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Detalles Bibliográficos
Autor principal: Snyder, D M
Lenguaje:eng
Publicado: 2004
Materias:
Acceso en línea:http://cds.cern.ch/record/789637
Descripción
Sumario:The possibility of performing quantum erasure using a single form of quantum erasure in an experiment is explored. This contrasts with the two possibilities for quantum erasure usually employed (e.g., whether a photon shed by an atom is eliminated or is instead just not subject to specification regarding its location in either one or the other of two micromaser cavities). Where a single form of erasure is employed, when the physical existent reaches the detection screen it should show a typical Young-type interference pattern like that found for classic two-slit gedankenexperiments in quantum mechanics where there is no manipulation of the "particle" in its travel to the double-slit. The specific form of single-form quantum erasure explored here allows for the possibility of transmitting information to locations remote from photons shed into one of a pair of micromaser cavities. The form of this information corresponds to the "dots" and "dashes" of Morse code or, in general, the binary bits of digital data. The velocity of light does not appear to be a limiting factor for the transmission of this information. The apparent possibility of faster-than-light communication depends on the separation of the measurement process that usually occurs in one step into two steps in the quantum eraser scenario employed. Usually a measurement occurs and is made available to the environment in one step. In the quantum eraser, these are two distinct steps. We have essentially a "measurement in process" after the time that a photon is shed in one of the micromaser cavities and before we definitely know into which cavity the photon has been shed by an atom passing through the cavity or before it is definitely known that the photon's location in one or the other cavity can no longer be determined. While the "measurement in process" exists, the conventional notion of time may be suspended as concerns this measurement and any other entangled existent that is affected by the measurement of the photon's location. Once it is known whether the photon is indeed in only one cavity or is instead now in the combined cavity that occupies the space formerly occupied by both cavities that were separated when the shutter was closed, the atom assumes its corresponding role in a suitable distribution when it is measured that is in line with its being entangled with the photon and the corresponding measurement result concerning the photon's location.