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 کاملIndistinguishability of independent single photons
The indistinguishability of independent single photons is presented by decomposing the single photon pulse into the mixed state of different transform-limited pulses. The entanglement between single photons and outer environment or other photons induces the distribution of the center frequencies of those transform-limited pulses and makes photons distinguishable. Only the single photons with th...
متن کاملNonlinear interaction between single photons.
Harnessing nonlinearities strong enough to allow single photons to interact with one another is not only a fascinating challenge but also central to numerous advanced applications in quantum information science. Here we report the nonlinear interaction between two single photons. Each photon is generated in independent parametric down-conversion sources. They are subsequently combined in a nonl...
متن کاملRamsey Interference with Single Photons.
Interferometry using discrete energy levels of nuclear, atomic, or molecular systems is the foundation for a wide range of physical phenomena and enables powerful techniques such as nuclear magnetic resonance, electron spin resonance, Ramsey-based spectroscopy, and laser or maser technology. It also plays a unique role in quantum information processing as qubits may be implemented as energy sup...
متن کاملQuantum beat of two single photons.
The interference of two single photons impinging on a beam splitter is measured in a time-resolved manner. Using long photons of different frequencies emitted from an atom-cavity system, a quantum beat with a visibility close to 100% is observed in the correlation between the photodetections at the output ports of the beam splitter. The time dependence of the beat amplitude reflects the coheren...
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ژورنال
عنوان ژورنال: Science
سال: 2011
ISSN: 0036-8075,1095-9203
DOI: 10.1126/science.334.6052.17-d