Weak measurement of the arrival times of single photons and pairs of entangled photons
نویسندگان
چکیده
منابع مشابه
Single and Entangled Photons
Quantum computing is a sought after technology that will greatly increase the speed and security of computations and communications. The understanding of quantum computing and information technology is dependent upon the understanding of quantum interactions. The difference between current computers and quantum computers lies in the fundamental units of information utilized. The qubit, which is...
متن کاملSources of Single and Entangled Photons
The ability to produce single photons and entangled photon pairs in desired quantum states is essential in any system intended to handle quantum information. Single photons serve as qubits in quantum computers, and the most powerful operations in those computers are performed by entangling them. Further, entangled pairs of photons are the carriers for signals in quantum-encrypted communications...
متن کاملHighly efficient heralding of entangled single photons.
Single photons are an important prerequisite for a broad spectrum of quantum optical applications. We experimentally demonstrate a heralded single-photon source based on spontaneous parametric down-conversion in collinear bulk optics, and fiber-coupled bolometric transition-edge sensors. Without correcting for background, losses, or detection inefficiencies, we measure an overall heralding effi...
متن کاملRoutes to Single and Entangled Photons
The advent of quantum information and computation science has placed stringent demands on optical sources, namely that produce single or entangled photons. Quantum cryptography, quantum radiometry, distributed quantum computing as well as adjacent technologies such as biomedical, and astronomical imaging and low power classical communication also rely on single photon technologies and their ent...
متن کاملRemote Spectral Measurement Using Entangled Photons
By utilizing the frequency anticorrelation of two-photon states produced via spontaneous parametric down conversion (SPDC), the working principle of a novel remote spectrometer is demonstrated. With the help of a local scanning monochromator, the spectral transmission function of an optical element (or atmosphere) at remote locations can be characterized for wide range of wavelengths with expec...
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ژورنال
عنوان ژورنال: Physical Review A
سال: 2004
ISSN: 1050-2947,1094-1622
DOI: 10.1103/physreva.69.042103