Continuous variable cloning via network of parametric gates.

نویسندگان

  • G M D'Ariano
  • F De Martini
  • M F Sacchi
چکیده

We propose an experimental scheme for the cloning machine of continuous quantum variables through a network of parametric amplifiers working as input-output four-port gates.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Continuous-Variable Quantum Cloning of Coherent states with Phase-Conjugate Input Modes Using Linear Optics

We propose a scheme for continuous-variable quantum cloning of coherent states with phaseconjugate input modes using linear optics. The quantum cloning machine yields M identical optimal clones from N replicas of a coherent state and N its replicas of phase conjugate. This scheme can be straightforwardly implemented with the setup accessible at present since its optical implementation only empl...

متن کامل

Optical Quantum Cloning – a Review

After a brief introduction to the quantum no-cloning theorem and its link with the linearity and causality of quantum mechanics, the concept of quantum cloning machines is sketched, following, whenever possible, the chronology of the main results. The important classes of quantum cloning machines are reviewed, in particular state-independent and state-dependent cloning machines. The 1-to-2 clon...

متن کامل

Quantum cloning of continuous-variable entangled states

We consider the quantum cloning of continuous variable entangled states. This is achieved by introducing two symmetric entanglement cloning machines or e-cloners : a local e-cloner and a global e-cloner; where we look at the preservation of entanglement in the clones under the condition that the fidelity of the clones is maximized. These cloning machines are implemented using simple linear opti...

متن کامل

Continuous-variable and hybrid quantum gates

We provide several schemes to construct the continuous-variable SWAP gate and present a Hermitian generalized many-body continuous controlled-NOT gate. We introduce and study the hybrid controlled-NOT gate and controlledSWAP gate, and their physical realizations are discussed in trapped-ion systems. These continuous-variable and hybrid quantum gates may be used in the corresponding continuous-v...

متن کامل

Experimental Demonstration of Continuous Variable Cloning with Phase-Conjugate Inputs

We report the experimental demonstration of continuous variable cloning of phase conjugate coherent states as proposed by Cerf and Iblisdir (Phys. Rev. Lett. 87, 247903 (2001)). In contrast to the proposal of Cerf and Iblisdir, the cloning transformation is accomplished using only linear optical components, homodyne detection and feedforward. Three clones are succesfully produced with fidelitie...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:
  • Physical review letters

دوره 86 5  شماره 

صفحات  -

تاریخ انتشار 2001