Quantum channel equalisation for single photon states
Single Photon Experiments and Quantum Complementarity
... physical states ψ 1 6= ψ 2 of a physical system and we know that ψ 1 ORψ 2 is a true statement we can easily deduce that ψ 1 XORψ 2 is a true statement ...In Quantum Mechanics however we encounter a novel ...
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Quantum frequency conversion of a quantum dot single photon source on a nanophotonic chip
... true quantum frequency conversion of single-photon states pro- duced by a ...for quantum frequency-conversion applications, while also ...
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Quantum dot single photon sources for entanglement enhanced interferometry
... LOSS BUDGETING AND RESOURCE COUNTING To describe the precision of the phase measurement in context of resource counting and loss budgeting, we make use of the theoretical description derived in Thomas-Peter et al. [11], ...
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Integrated sources of photon quantum states based on nonlinear optics
... the single- or multimode character in the frequency domain can be determined by measuring the signal/idler joint spectral distribution (JSD), ...signal. Single-mode emission will then be characterised by ...
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Interference with a quantum dot single-photon source and a laser at telecom wavelength
... to quantum communication and quantum key distri- bution 12,13 (QKD), the most developed technology based on photonic quantum ...these states with single photons from an entangled pair ...
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A quantum dot as a source of time-bin entangled multi-photon states
... A quantum computer has the potential to revolutionize multiple industries by enabling a drastic speed-up relative to classical computers for certain quantum algorithms and ...optical quantum ...
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Optical quantum random number generation: applications of single-photon event timing
... Operation Single-photon detection of optical states in the high-loss regime is a commonly used process for quantum random number generation, ...phase, photon number, ...Poissonian ...
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Single-photon three-qubit quantum logic using spatial light modulators
... Single-photon three-qubit quantum logic using spatial light modulators Kumel ...a single photon can be vastly expanded by exploiting its multiple degrees of freedom: spatial, temporal, ...
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Electrically tunable single photon source triggered by a monolithically integrated quantum dot microlaser
... levels of the QD but leaves the energy of the FPM unchanged, 20 and X is electro-optically tuned into resonance with the FPM at a bias of 1.1 V. Purcell enhancement as well as a gradual increase in intensity due to ...
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Quantum key distribution using quantum dot single photon emitting diodes in the red and near infrared spectral range
... polarization states for the BB84 protocol were set by a fast electro-optic modulator (EOM) (here we used horizontal and vertical linear polarizations together with right and left circular ...
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Hybrid quantum key distribution using coherent states and photon-number-resolving detectors
... hybrid quantum key distribution protocol using coherent ...the channel decreases, the performance is almost the same as that of the ...pure states, having access to both the orthogonal quadratures, ...
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Real-time monitoring of single-photon detectors against eavesdropping in quantum key distribution systems
... around 16 dB more transparent, if there is originally such a margin; or Eve may be present during the system synchronization, when the link losses are estimated, and artificially fakes a higher loss, which is removed ...
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Intrinsic and environmental effects on the interference properties of a high performance quantum dot single photon source
... temperature-dependent properties of our sample through ex- citonic Rabi oscillations. We excite the QD using resonant laser pulses with a fixed temporal width of δt = 1.2 ps and a repetition rate of 82 MHz, and record ...
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Purification of a single-photon nonlinguarity
... induce quantum interference of the two transmitted orthogonal polariza- tion components ...the single-photon component in the low excitation ...number states remains largely intact, allowing ...
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Single-photon electroluminescence for on-chip quantum networks
... semiconductor quantum dots (QDs) are very promising as on-chip light ...from single QDs has been demonstrated with both optical 8–11 and electrical excitation, 12 and the single-photon nature ...
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Retrodictive states and two-photon quantum imaging
... conventional quantum theory a fully predictive cal- culation is performed based on the two-photon state pro- duced by the crystal evolved forward in time and space through both paths to form the joint ...
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Superconducting single photon detectors for quantum information processing
... with single mode or multi-mode fibre aligned to the detector’s active ...the single photon ...input photon number to the number of registered counts, over a range of different bias currents ...
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Non Iterative Joint Channel Equalisation and Channel Decoding
... used to describe convolutional codes, the encoder state is. determined by the bits in the encoder's shift-register[r] ...
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Reducing Papr and Channel Equalisation in OFDM
... 1.1 OFDM System Design An OFDM use overlap signals to divide the frequency selective channel into a number of narrow band flat fading sub channel. The FFT encodes the block of symbol. By spacing the ...
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Channel discrimination power of bipartite quantum states
... between states and ...entangled states outperform—in the sense of having a larger CDP—all states that pass the so-called realignment criterion of separability [24, ...of quantum information ...
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