entangled two-photon states
A quantum dot as a source of time-bin entangled multi-photon states
... Figure 2. Experimental overview. (a) Illustration of the experimental setup used. The output of the resonant CW laser (red) is modulated using an electro-optic modulator. The output is combined on a beam splitter with ...
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On demand semiconductor source of entangled photons which simultaneously has high fidelity, efficiency, and indistinguishability
... the entangled photons by measuring their state fidelity, that is, the overlap of our experimentally produced states with an ideal, maximally entangled state (criterion ...the entangled ...
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Bloch theory of entangled photon generation in non-linear photonic crystals
... one, two, and three ...in two and three-dimensional structures. An advantage of the use of two-dimensional structures is that two-dimensional structures with a large index contrast can be more ...
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Wieczorek, Witlef (2009): Multi-Photon Entanglement: Experimental Observation, Characterization, and Application of up to Six-Photon Entangled States. Dissertation, LMU München: Fakultät für Physik
... Air and the nonlinear crystal, here β-barium borate (BBO), cause dispersion inside the cavity, which distort the resonant cavity modes away from being equidistant in frequency and consequently change the resonant spec- ...
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Precise quantum tomography of photon pairs with entangled orbital angular momentum
... of photon pairs generated by parametric down-conversion with orbital angular momentum (OAM) ...the two-dimensional state subspace defined by the OAM states ±` and superpositions thereof, with ` = 1 , ...
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On-chip generation of high-dimensional entangled quantum states and their coherent control
... quantum states are displayed, showing for each one the equipment used and a schematic of the modification imposed on the quantum state in the spectral ...initial states were generated using the operational ...
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Information communicated by entangled photon pairs
... An important issue to address for QKD is determining how many bits of the secret key are distributed. A prerequisite for this calculation is determining the maximum number of unsecured bits that the two parties ...
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Entangled mixed-state generation by twin-photon scattering
... sub-Werner states, the phenomenological model represents a non-trace- preserving quantum ...of two spatially separate subsystems ...sured states do not violate the no-signaling condition as they are ...
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Gaussian interferometric power
... all two-mode Gaussian states. We identify separable and entangled Gaussian states which maximize the interferometric power at fixed mean photon number of the probes and discuss the ...
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SQEEZED AND ENTANGLED STATES OF SINGLE SPIN
... – photon twins created at once and propagating in the same direction (concerning biphotons, see ...single photon, biphoton can be considered as a “particle” with three polarizations, so that it represents a ...
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Retrodictive states and two-photon quantum imaging
... are entangled in energy and wavevector. The two photons within each photon pair are emitted with polarisations orthogonal to one another, which enables their separation by means of a polarising beam ...
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On-chip frequency combs and telecommunications signal processing meet quantum optics
... Abstract Entangled optical quantum states are essential towards solving questions in fundamental physics and are at the heart of applications in quantum information ...of photon states ...
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Creating spatially entangled 4-photon states by parametric down conversion
... into two light paths using a 50/50 2” beam-splitter ...single photon de- tector and the counts from these detectors are send to an ...whether two photons were detected at the same ...
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Testing Bell’s Theorem with Circular Polarization
... measured entangled state, we can rewrite it in terms of right and left circular polarization states, R and ...of two Type 1 entangled pho- tons is usually written as a superposition of both ...
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Time bin entangled photon pairs from Bragg reflection waveguides
... single photon detectors, we can drive our source at low pump powers, enabling a modest Klyshko efficiency and a strong photon-pair ...time-bin entangled states from the PDC emission of our BRW ...
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Generation, manipulation and detection of NIR and MIR entangled photon pairs
... lated photon pairs presented in Part I and Part ...NIR entangled photon pairs is ...by two coupled silicon microring res- onators. Only two parameters are required to set the internal ...
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Statistics of photon-subtracted and photon-added states
... mean photon number is 5. If we succeed in subtracting a photon then the resulting field mode will have a mean photon number of 9, as the fact that the photon subtraction was successful implies ...
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Decay of Maximally Entangled Bell States
... a two qubit system is subjected to various kind of noises, there is exponential as well as sudden decay of entanglement ...maximally entangled states we found exponential decay of ...maximally ...
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Entangled States and Observables in Open Quantum Relativity
... implies entangled properties of the state of universe and, as quoted, we can imagine that from the original state comes out from a family of sub-states, each of them derived from the first one and each of ...
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Squeezed and Entangled Gluon States in QCD Jet
... namely, as soon as some measurement projects one quark onto a state with definite colour, the other quark also immediately obtains opposite colour that leads to coupling of quark-antiquark pair, string tension inside q ...
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