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Photonic quantum simulators
Quantum optics has played an important role in the exploration of foundational issues in quantum mechanics, and in using quantum effects for information processing and communications purposes.…
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Experimental boson sampling
The boson-sampling problem is experimentally solved by implementing Aaronson and Arkhipov's model of computation with photons in integrated optical circuits. These results set a benchmark for a type…
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De Broglie wavelength of a non-local four-photon state
TLDR
A four-photon interferometer based on linear optics is demonstrated, demonstrating the presence of a four-particle mode-entangled state and anticipating that this scheme should be extendable to arbitrary photon numbers, holding promise for realizable applications with entanglement-enhanced performance.
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Experimental verification of an indefinite causal order
TLDR
Researchers report the first decisive demonstration of a process with an indefinite causal order, and experimentally determine a causal witness, demonstrating by almost 7 SDs that the experimentally implemented process does not have a definite causal order.
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Continuous‐Variable Quantum Key Distribution with Gaussian Modulation—The Theory of Practical Implementations
TLDR
The theoretical foundations of continuous‐variable quantum key distribution (CV‐QKD) with Gaussian modulation are reviewed and the essential relations from scratch in a pedagogical way and a set of new original noise models are presented to get an estimate of how well a given set of hardware will perform in practice.
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Demonstration of Blind Quantum Computing
TLDR
An experimental demonstration of blind quantum computing in which the input, computation, and output all remain unknown to the computer is presented and the conceptual framework of measurement-based quantum computation that enables a client to delegate a computation to a quantum server is exploited.
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Experimental one-way quantum computing
TLDR
The implementation of Grover's search algorithm demonstrates that one-way quantum computation is ideally suited for such tasks.
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Quantum discord as resource for remote state preparation
Quantum discord is the total non-classical correlation between two systems. This includes, but is not limited to, entanglement. Photonic experiments now demonstrate that separable states with…
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Experimental superposition of orders of quantum gates
TLDR
This work experimentally demonstrates the creation of the required superposition of gate orders by using additional degrees of freedom of the photons encoding qubits, which could allow quantum algorithms to be implemented with an efficiency unlikely to be achieved on a fixed-gate-order quantum computer.
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High-speed linear optics quantum computing using active feed-forward
TLDR
It is demonstrated that, for a perfect cluster state and no photon loss, the one-way quantum computation scheme would operate with good fidelity and that the feed-forward components function with very high speed and low error for detected photons.
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