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Quantum channels

Chaos in quantum channels

Chaos in quantum channels

... 21 Quantum circuits solely consisting of Clif- ford operators are classically simulable since transformations of Pauli operators can be efficiently characterized by pairs of classical ...in quantum ...

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Additive Classical Capacity of Quantum Channels Assisted by Noisy Entanglement

Additive Classical Capacity of Quantum Channels Assisted by Noisy Entanglement

... [9] . References [10,11] provide a capacity formula for the trade-off of classical and quantum information transmission and entanglement generation (or consumption). With the trade-off capacity formula in hand, it ...

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Investigation of underwater quantum channels in a 30 meter flume tank using structured photons

Investigation of underwater quantum channels in a 30 meter flume tank using structured photons

... Figure 3. Secret key rate for the underwater polarization channel. The optimal secret key rate for the underwater channel with the measured attenuation is shown by the black curve. The experimental points (red) show the ...

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Activation and superactivation of single-mode Gaussian quantum channels

Activation and superactivation of single-mode Gaussian quantum channels

... Therefore, if we find an input state such that the coherent information of the combined channel exceeds the upper bound of the quantum capacity for the thermal attenuator, superactivatio[r] ...

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Activation and superactivation of single-mode Gaussian quantum channels

Activation and superactivation of single-mode Gaussian quantum channels

... Therefore, if we find an input state such that the coherent information of the combined channel exceeds the upper bound of the quantum capacity for the thermal attenuator, superactivatio[r] ...

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Adaptive recurrence quantum entanglement distillation for two-Kraus-operator channels

Adaptive recurrence quantum entanglement distillation for two-Kraus-operator channels

... INTRODUCTION Quantum entanglement shared by remote agents serves as a valuable resource for many important applications of quantum computation and quantum information [ 1 – 3 ], such as secret key ...

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Security and implementation of advanced quantum cryptography : quantum money and quantum weak coin flipping

Security and implementation of advanced quantum cryptography : quantum money and quantum weak coin flipping

... implement quantum money and quantum weak coin flipping protocols in such a way that information-theoretic security is ...generation, quantum channels and measurement ...a quantum ...

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Continuous time channels with interference

Continuous time channels with interference

... time channels with adversarial delay errors in the presence of ...continuous-time channels in the presence of both delay errors and (signal) noise ...

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On group theory for quantum gates and quantum coherence

On group theory for quantum gates and quantum coherence

... “oldfashioned” quantum gate circuitry, fault tolerant quantum codes and measurements, already apparent in the stabilizer formalism [8, ...measurement-only quantum computation ...to quantum ...

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Coding for two-way channels

Coding for two-way channels

... One straightforward way to solve this overflow problem and constrain the magnitude of the variations in decoding computation would be to use a noiseless feedback c[r] ...

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Quantum centipedes: collective dynamics of interacting quantum walkers

Quantum centipedes: collective dynamics of interacting quantum walkers

... the quantum centipede made of N fermionic quantum walkers on the one-dimensional lattice interacting by means of the simplest of all hard-bound constraints: the distance between two consecutive fermions is ...

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Adaptive channels for wireless networks

Adaptive channels for wireless networks

... This model of operation, shown in figure 4-4, provides a clean interface where the user applications supply their requirements, the virtual network device reports [r] ...

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Quantum control

Quantum control

... 10. Lindblad G (1976) On the generators of quantum dynamical semigroups. Comm Math Phys 48(2):119–130 11. Rabitz H, Turinici G, Brown E (2003) Control of quantum dynamics: Concepts, procedures and future ...

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Communication over fading dispersive channels.

Communication over fading dispersive channels.

... The basic problem to be considered is digital communication over a fading, dis- persive channel, accomplished by sending one of a set of M equiprobable signals a[r] ...

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Communication through channels in cascade

Communication through channels in cascade

... in the oaee of gaueslan additive noise and for sample by sample retransm1ssion at the intermediate station, it is shown that the optimum 1nput probability density 18 gaussian and that th[r] ...

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Quantum Canada

Quantum Canada

... Transformative Quantum Technologies (TQT): University of Waterloo In 2016, the University of Waterloo received a CFREF award of more than $76 million, with additional partner contributions of $68 million, for an ...

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2D quantum turbulence in a polariton quantum fluid

2D quantum turbulence in a polariton quantum fluid

... conservative quantum fluids, based on the Gross-Pitaevskii ...polaritonic quantum fluid providing a particularly large coherence length , but our results are certainly relevant to other types of ...

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From open quantum systems to open quantum maps

From open quantum systems to open quantum maps

... functions have been introduced in the physics literature, to provide approximate ways of computing eigenvalues and resonances of quantum chaotic systems – see [47, 20, 10]. These semiclassical zeta functions are ...

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Tracer diffusion in crowded narrow channels

Tracer diffusion in crowded narrow channels

... The channel geometry on which we concentrate here is given by two particular examples (see figure 2 ) —2D ideal strips, such as ones printed on a substrate and used in micro- fluidic devices [ 31 ], and 3D ideal ...

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Water adsorption in hydrophobic MOF channels.

Water adsorption in hydrophobic MOF channels.

... free energy point of view at low pressure. The plateau of the isotherm, as seen in Fig. 3, corresponds to 18 water molecules per unit cell (around 3 kPa). These water molecules are all located in the larger ...

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