The physical origin of a photon-number parity effect in cavity quantum electrodynamics
The rapidly increasing capability to modulate the physicochemical properties of atomic groups and molecules by means of their coupling to radiation, as well as the revolutionary potential of quantum computing for materials simulation and prediction, fuel the interest for non-classical phenomena prod...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2021-11-01
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| Series: | Results in Physics |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2211379721007701 |
| _version_ | 1818938087141539840 |
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| author | Agostino Migliore Anna Napoli Antonino Messina |
| author_facet | Agostino Migliore Anna Napoli Antonino Messina |
| author_sort | Agostino Migliore |
| collection | DOAJ |
| description | The rapidly increasing capability to modulate the physicochemical properties of atomic groups and molecules by means of their coupling to radiation, as well as the revolutionary potential of quantum computing for materials simulation and prediction, fuel the interest for non-classical phenomena produced by atom-radiation interaction in confined space. One of such phenomena is a “parity effect” that arises in the dynamics of an atom coupled to two degenerate cavity field modes by two-photon processes and manifests itself as a strong dependence of the field dynamics on the parity of the initial number of photons. Here we identify the physical origin of this effect in the quantum correlations that produce entanglement among the system components, explaining why the system evolution depends critically on the parity of the total number of photons. Understanding the physical underpinnings of the effect also allows us to characterize it within the framework of quantum information theory and to generalize it. Since a single photon addition/removal has dramatic effects on the system behavior, this effect may be usefully applied, also for amplification purposes, to optoelectronics and quantum information processing. |
| first_indexed | 2024-12-20T06:02:16Z |
| format | Article |
| id | doaj.art-0888f0c9738248fdb4745885c66980b7 |
| institution | Directory Open Access Journal |
| issn | 2211-3797 |
| language | English |
| last_indexed | 2024-12-20T06:02:16Z |
| publishDate | 2021-11-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Results in Physics |
| spelling | doaj.art-0888f0c9738248fdb4745885c66980b72022-12-21T19:50:53ZengElsevierResults in Physics2211-37972021-11-0130104690The physical origin of a photon-number parity effect in cavity quantum electrodynamicsAgostino Migliore0Anna Napoli1Antonino Messina2Department of Chemical Sciences, University of Padova, Via Marzolo 1, 35131 Padova, Italy; Corresponding author.Dipartimento di Fisica e Chimica Emilio Segrè, Università degli Studi di Palermo, Via Archirafi 36, I-90123 Palermo, Italy; Istituto Nazionale di Fisica Nucleare, Sezione di Catania, Via Santa Sofia 64, I-95123 Catania, ItalyDipartimento di Matematica ed Informatica, Università degli Studi di Palermo, Via Archirafi, 34, I-90123 Palermo, ItalyThe rapidly increasing capability to modulate the physicochemical properties of atomic groups and molecules by means of their coupling to radiation, as well as the revolutionary potential of quantum computing for materials simulation and prediction, fuel the interest for non-classical phenomena produced by atom-radiation interaction in confined space. One of such phenomena is a “parity effect” that arises in the dynamics of an atom coupled to two degenerate cavity field modes by two-photon processes and manifests itself as a strong dependence of the field dynamics on the parity of the initial number of photons. Here we identify the physical origin of this effect in the quantum correlations that produce entanglement among the system components, explaining why the system evolution depends critically on the parity of the total number of photons. Understanding the physical underpinnings of the effect also allows us to characterize it within the framework of quantum information theory and to generalize it. Since a single photon addition/removal has dramatic effects on the system behavior, this effect may be usefully applied, also for amplification purposes, to optoelectronics and quantum information processing.http://www.sciencedirect.com/science/article/pii/S2211379721007701Quantum opticsParity effectAtom-field interactionQuantum entanglementEntropy |
| spellingShingle | Agostino Migliore Anna Napoli Antonino Messina The physical origin of a photon-number parity effect in cavity quantum electrodynamics Results in Physics Quantum optics Parity effect Atom-field interaction Quantum entanglement Entropy |
| title | The physical origin of a photon-number parity effect in cavity quantum electrodynamics |
| title_full | The physical origin of a photon-number parity effect in cavity quantum electrodynamics |
| title_fullStr | The physical origin of a photon-number parity effect in cavity quantum electrodynamics |
| title_full_unstemmed | The physical origin of a photon-number parity effect in cavity quantum electrodynamics |
| title_short | The physical origin of a photon-number parity effect in cavity quantum electrodynamics |
| title_sort | physical origin of a photon number parity effect in cavity quantum electrodynamics |
| topic | Quantum optics Parity effect Atom-field interaction Quantum entanglement Entropy |
| url | http://www.sciencedirect.com/science/article/pii/S2211379721007701 |
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