What is continuous variable quantum key distribution?

The continuous variable quantum key distribution can build upon standard telecommunication technology and exhibits a higher secret key rate per pulse at a relatively short distance due to the possibility of encoding more than 1 bit per pulse.

Is quantum computing discrete?

Another important feature of quantum computing is that it is a continuous computing model. Change a bit, which can only take two discrete values, for a qubit, which is a point on the 3−dimensional unit sphere centered at 0 in the real space R4.

Is quantum computing continuous?

Continuous-variable (CV) quantum information is the area of quantum information science that makes use of physical observables, like the strength of an electromagnetic field, whose numerical values belong to continuous intervals. One primary application is quantum computing.

What are Gaussian states?

Quantum optical Gaussian states are a type of important robust quantum states which are manipulatable by the existing technologies. Extending the existing results of quantum information with discrete quantum states to the case of continuous variable quantum states is an interesting theoretical job.

What does the quantum Fourier transform do?

The quantum Fourier transform (QFT) transforms between two bases, the computational (Z) basis, and the Fourier basis. In the same way, all multi-qubit states in the computational basis have corresponding states in the Fourier basis. The QFT is simply the function that transforms between these bases.

What is meant by quantum cryptography?

Quantum cryptography is the science of exploiting quantum mechanical properties to perform cryptographic tasks. The best known example of quantum cryptography is quantum key distribution which offers an information-theoretically secure solution to the key exchange problem.

What is a Gaussian quantum state?

Who invented the fast Fourier Transform?

Cooley and Tukey
The fast Fourier transform (FFT) algorithm was developed by Cooley and Tukey in 1965. It could reduce the computational complexity of discrete Fourier transform significantly from \(O(N^2)\) to \(O(N\log _2 {N})\).

What do you mean by quantum cryptography discuss three stages of quantum cryptography in details?

The Three-stage quantum cryptography protocol, also known as Kak’s three-stage protocol is a method of data encryption that uses random polarization rotations by both Alice and Bob, the two authenticated parties, that was proposed by Subhash Kak.

What is a continuous-variable quantum system?

In recent years, quantum information has entered the domain of continuous-variable systems, that is, quantum systems described by an infinite-dimensional Hilbert space 1, 2. So far, the most studied continuous-variable systems are the bosonic modes, such as the optical modes of the electromagnetic field.

What is quantquantum cryptography?

Quantum cryptography has recently been extended to continuous-variable systems, such as the bosonic modes of the electromagnetic field possessing continuous degrees of freedom. In particular, several cryptographic protocols have been proposed and experimentally implemented using bosonic modes with Gaussian statistics.

Is it possible to perform quantum cryptography with CV-QNN?

Several simulation experiments are performed on the Strawberry Fields platform for processing the classical data “Quantum Cryptography” with CV-QNN to describe the feasibility of our method.

What does CV-QNN stand for?

Thus continuous-variable quantum neural network (CV-QNN) model is utilized in this paper to design a more practical quantum cryptography scheme, which can be considered as an approach to quantum neural cryptography (QNC).