What does cavity quantum electrodynamics mean?

Definitions for cavity quantum electrodynamics
cav·ity quan·tum elec·tro·dy·nam·ics

This dictionary definitions page includes all the possible meanings, example usage and translations of the word cavity quantum electrodynamics.

Wiktionary

  1. cavity quantum electrodynamicsnoun

    The coupled interaction between matter and an electromagnetic field within a resonating structure

Wikipedia

  1. Cavity quantum electrodynamics

    Cavity quantum electrodynamics (cavity QED) is the study of the interaction between light confined in a reflective cavity and atoms or other particles, under conditions where the quantum nature of photons is significant. It could in principle be used to construct a quantum computer. The case of a single 2-level atom in the cavity is mathematically described by the Jaynes–Cummings model, and undergoes vacuum Rabi oscillations | e ⟩ | n − 1 ⟩ ↔ | g ⟩ | n ⟩ {\displaystyle |e\rangle |n-1\rangle \leftrightarrow |g\rangle |n\rangle } , that is between an excited atom and n − 1 {\displaystyle n-1} photons, and a ground state atom and n {\displaystyle n} photons. If the cavity is in resonance with the atomic transition, a half-cycle of oscillation starting with no photons coherently swaps the atom qubit's state onto the cavity field's, ( α | g ⟩ + β | e ⟩ ) | 0 ⟩ ↔ | g ⟩ ( α | 0 ⟩ + β | 1 ⟩ ) {\displaystyle (\alpha |g\rangle +\beta |e\rangle )|0\rangle \leftrightarrow |g\rangle (\alpha |0\rangle +\beta |1\rangle )} , and can be repeated to swap it back again; this could be used as a single photon source (starting with an excited atom), or as an interface between an atom or trapped ion quantum computer and optical quantum communication. Other interaction durations create entanglement between the atom and cavity field; for example, a quarter-cycle on resonance starting from | e ⟩ | 0 ⟩ {\displaystyle |e\rangle |0\rangle } gives the maximally entangled state (a Bell state) ( | e ⟩ | 0 ⟩ + | g ⟩ | 1 ⟩ ) / 2 {\displaystyle (|e\rangle |0\rangle +|g\rangle |1\rangle )/{\sqrt {2}}} . This can in principle be used as a quantum computer, mathematically equivalent to a trapped ion quantum computer with cavity photons replacing phonons.

Wikidata

  1. Cavity quantum electrodynamics

    Cavity quantum electrodynamics is the study of the interaction between light confined in a reflective cavity and atoms or other particles, under conditions where the quantum nature of light photons is significant. It could in principle be used to construct a quantum computer. The case of a single 2-level atom in the cavity is mathematically described by the Jaynes-Cummings model, and undergoes vacuum Rabi oscillations, that is between an excited atom and n-1 photons, and a ground state atom and n photons. If the cavity is on resonance with the atomic transition, a half-cycle of oscillation starting with no photons coherently swaps the atom qubit's state onto the cavity field's, and can be repeated to swap it back again; this could be used as a single photon source, or as an interface between an atom or trapped ion quantum computer and optical quantum communication. Other interaction durations create entanglement between the atom and cavity field; for example, a quarter-cycle on resonance starting from gives the maximally entangled state . This can in principle be used as a quantum computer, mathematically equivalent to a trapped ion quantum computer with cavity photons replacing phonons.

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Numerology

  1. Chaldean Numerology

    The numerical value of cavity quantum electrodynamics in Chaldean Numerology is: 4

  2. Pythagorean Numerology

    The numerical value of cavity quantum electrodynamics in Pythagorean Numerology is: 2

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"cavity quantum electrodynamics." Definitions.net. STANDS4 LLC, 2024. Web. 29 Mar. 2024. <https://www.definitions.net/definition/cavity+quantum+electrodynamics>.

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