Phase and amplitude controlled heralding of N00N states

Title
Phase and amplitude controlled heralding of N00N states
Authors
임향택Young-Sik RaJoo-Eon OhYoon-Ho Kim
Issue Date
2015-11
Publisher
Optics express
Citation
VOL 23, NO 24-30814
Abstract
Entangled photons, an essential resource in quantum technology, are mostly generated in spontaneous processes, making it impossible to know if the quantum state is available for use; giving only a posteriori knowledge of the quantum state via destructive photon detection processes. There are schemes for heralding the generation of entangled photons but the heralding schemes developed to date only inform the generation of a predetermined quantum state with no capability of state control. Here, we report the phase and (probability-) amplitude controlled heralding, i.e., complete quantum state heralding, of multiphoton entangled states or N00N states. Since the phase and amplitude controls are inseparably integrated into the heralding mechanism, our scheme enables generation of N00N states with arbitrary phases and amplitudes. Such a flexible heralding scheme is expected to play important roles in various photonic quantum information applications.
URI
http://pubs.kist.re.kr/handle/201004/72473
ISSN
1094-4087
Appears in Collections:
KIST Publication > Article
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