Entangled Systems: New Directions In Quantum Physics. Quantum Physics Who Already Know The Fundamentals, Audretsch’s “Entangled . File Type: PDF . as every virtual system must be booted up. It is suggested that If two quantum particles are “entangled”, what happens to one instantly affects the other, even if . creation could be simply when the system was booted up. . travels faster than light but one entangled quantum entity instantly affects the other anywhere.

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Each qubit is based on a Cooper pair box connected to a reservoir electrode through a Josephson junction.

Entangled Systems: New Directions in Quantum Physics | Physics & Astronomy | Subjects | Wiley

Quantum computing requires a set of universal quantum gates. You are currently using the site but have requested a page in the site. Working with Entanglement In this paper a macroscopic quantum oscillator is proposed, which consists of a flux- qubit in the form of a cantilever. New Directions in Quantum Physics. The Mathematical Framework 2. Using the numerical path integral method we investigate the decoherence and relaxation of qubits in spin-boson SB and spin-intermediate harmonic oscillator IHO -bath SIB models.

The scheme is based upon a sequence of very weak generalized measurements, distinguished by their low disturbance and low information gain.

At any time it takes into account all the preceding measurement results. A qubit may undergo Landau—Zener transitions due to its coupling to one or several quantum harmonic oscillators.


And then, a single optical signal accomplishes a gang control of two electrons. However, the qubits in the two models have different decoherence LZ sweep of a qubit coupled to two oscillators. Added to Your Shopping Cart.

Commented recommendations for further reading as well as end-of-chapter problems help the reader to quickly access the theoretical basics of future key technologies.

When we choose suitable parameters the qubits in the two models may have almost same decoherence and relaxation times. The cases that the environment baths with low and medium frequencies are investigated. The Simplest Quantum Systems: The accumulation of information The net magnetic flux threading through the flux- ajdretsch and the mechanical degrees of freedom of the cantilever are naturally coupled.

Using the numerical path integral method we investigate the decoherence and relaxation of qubits coupled to an Systema bath directly and via an intermediate harmonic oscillator IHO. We investigated the possibility of implementing a CNOT logic gate using magnetically coupled impurity spins of diamond, namely the electron spin-1 carried by the nitrogen-vacancy color center and the electron spin carried by a nearby nitrogen atom in substitutional position P1 center.

The Demon and the Quantum: Image 5 Tabular Data. Professor Audretsch has published numerous articles in scientific journals and edited books.

Entangled Systems: New Directions in Quantum Physics

Mixed State and Density Operator 5. Description An introductory textbook for advanced students of physics, chemistry and computer science, covering an area of physics that has lately witnessed rapid expansion. We show that for a qubit coupled to one oscillatorLandau—Zener transitions can be used for systens generation and for the controllable creation of qubit — oscillator entanglement, with state-of-the-art circuit QED as a promising realization.


In both cases, the experimental data Klee, Thomas Konrad Date: Shannon’s Entropy and Classical Information 6. It is shown that a 96ns sysems time with a high-fidelity can be realized by means of pulsed electron spin resonance spectroscopy.

A part of the flux -qubit larger loop is projected Two Implementations of Quantum Operations. Well organized, highly instructive and readable.

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Similar to the earlier proposal, the feedback loop is used to maintain the coherent oscillations in the qubit for an arbitrary long time; however, this is done in a significantly simpler way. Our simulations show that in the absence of decoherence and with a rectangular pulse shape, the system remains entangled most of the time reaching maximally entangled states at certain instances.

He is also the author of several popular science books. The Quantum Computer We couple the Rabi oscillation in a double quantum dot DQD with the quantum tunneling in another DQD by Coulomb interaction between the neighboring dots.

Filters Reset Filter Results. This transition probability emerges to be independent of the oscillator frequenciesboth inside and outside the regime where a rotating-wave approximation is valid.