Download e-book for iPad: A Short Course in Quantum Information Theory: An Approach by Lajos Diosi

By Lajos Diosi

ISBN-10: 3540389946

ISBN-13: 9783540389941

ISBN-10: 3540389962

ISBN-13: 9783540389965

This brief and concise primer takes the vantage element of theoretical physics and the cohesion of physics. It units out to strip the burgeoning box of quantum details technology to its fundamentals via linking it to common ideas in physics. an intensive lecture instead of a complete textbook, this quantity relies on classes added over a number of years to complicated undergraduate and starting graduate scholars, yet basically it addresses an individual with a operating wisdom of simple quantum physics. Readers will locate those lectures a such a lot enough access element for theoretical stories during this box.

Show description

Read or Download A Short Course in Quantum Information Theory: An Approach From Theoretical Physics PDF

Similar quantum theory books

Download e-book for iPad: Relativity Demystified by David McMahon

Study quantum box concept rather easilyTrying to realize quantum box thought yet should not have endless time or the IQ of Einstein? No challenge! This easy-to-follow advisor is helping this complicated material with out spending loads of strength. Quantum box thought Demystified covers crucial ideas akin to particle physics and particular relativity.

Robert Alicki, Mark Fannes's Quantum Dynamical Systems PDF

Offers a common framework for learning quantum and classical dynamical platforms, either finite and endless, conservative and dissipative. Illustrated through a number of examples that are without delay attached to the correct physics.

Download PDF by E. U. Condon, Halis Odabasi: Atomic structure

Professor E. U. Condon's the speculation of Atomic Spectra was once the 1st complete e-book at the electron constitution of atoms, and has develop into a world-renowned vintage. initially released in 1980, Atomic constitution was once the past due Professor Condon's ultimate contribution to the literature of this box. accomplished by means of his colleague and previous pupil Halis Odabşi, this booklet was once one of many first built-in bills of the topic to incorporate such advancements as team concept innovations and Racah equipment.

New PDF release: Quantum mechanics with applications to nanotechnology and

Quantum mechanics transcends and supplants classical mechanics on the atomic and subatomic degrees. It offers the underlying framework for plenty of subfields of physics, chemistry and fabrics technology, together with condensed subject physics, atomic physics, molecular physics, quantum chemistry, particle physics, and nuclear physics.

Additional info for A Short Course in Quantum Information Theory: An Approach From Theoretical Physics

Sample text

Unitary rotation for |↑ −→ |↓ . What can be the rotation vector α that rotates the state |↑ into the orthogonal state |↓ ? Let us make a simple choice for the rotation ˆ (α) and verify the axis! Calculate the matrix of the corresponding unitary rotation U result. 3. Density matrix eigenvalues and -states in terms of polarization. e. the spectral expansion) of a density matrix in function of the polarization vector s. 4. Magnetic rotation for |↑ −→ |↓ . Determine the (constant) magnetic field ω that rotates the electronic spin from state |↓ into state |↑ .

49) ˆ ABint is zero then the tensor product initial state remains tensor product state, If H the dynamics does not create correlation between the q-subsystems. Non-vanishing ˆ ABint does usually create correlation. The motion of the whole q-system is reH versible (unitary), of course. But that of the subsystems is not. In case of tensor 8 This definition of q-separability was introduced by Werner [14]. 6 Collective system 29 product initial state ρˆA (0) ⊗ ρˆB (0), for instance, the reduced q-dynamics of the subsystem A will represent the time-dependent irreversible q-operation MA (t) which we can formally write as: ˆAB (t)ˆ ˆ † (t) ≡ MA (t)ˆ ρA (0) ⊗ ρˆB (0)U ρA (0) .

Method: determine the mean statistical fluctuation of the counts N↑x , N↑y , N↑z . 3. Fidelity of qubit determination. Suppose Alice sends Bob a random qubit |n . Bob knows this but he does not know the state itself. Bob measures a polarization σ ˆm chosen along a random direction m. Let us determine the best expected fidelity of Bob’s state estimate. 4. Post-measurement depolarization. Alice prepares for Bob a state of polarization s which is unknown to Bob but he wishes to learn it. On the received state, Bob would measure the polarization along a random direction, for lack of a better idea.

Download PDF sample

A Short Course in Quantum Information Theory: An Approach From Theoretical Physics by Lajos Diosi

by Michael

Rated 4.18 of 5 – based on 15 votes