Abstract
Novel methods are discussed for the state control of atoms coupled tosingle-mode and multi-mode cavities and microspheres.(1) Excitation decay control:The quantum Zeno effect, i.e. inhibition of spontaneous decay byfrequent measurements, is observable in high-Q cavities andmicrospheres using a sequence of evolution-interrupting pulses orrandomly-modulated CW fields.By contrast, in 'bad' cavities or open space, frequent measurementscan only accelerate the decay, causing the anti-Zeno effect.(2) Location-dependent interference of decay channels:Control of two metastable states is feasible viaresonant single-photon absorption to an intermediate state, byengineering spontaneous emission in a multimode cavity.(3) Decoherence control by conditionally interferingparallel evolutions: An arbitrary internal state of anatomic wavepacket can be protected from decoherence byinterference of its interactions with the cavity over manydifferent time intervals in parallel, followed bythe detection of appropriate atomic-momentum observables.The arsenal of control methods described above can advance thestate-of-the-art of quantum information storage and manipulation incavities.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
