Generation of qudits and entangled qudits
نویسندگان
چکیده
We propose schemes for the generation of d-level quantum states qudits and quantum entangled states of N qudits by adopting the polarization degree of freedom of photons. Arbitrary qudits can be prepared by putting d−1 identical and independent photons each with a given polarization into a single spatial and temporal mode. Then, by using N such qudits, linear optics, and proper projection measurements, quantum entangled states of N qudits can be produced. The frequencies of the N qudits can be identical or different according to the corresponding linear optics and projection measurements.
منابع مشابه
/ 02 03 03 7 v 1 7 M ar 2 00 2 Bounds on entanglement in qudit subsystems Vivien
The entanglement in a pure state of N qudits (d-dimensional distinguishable quantum particles) can be characterised by specifying how entangled its subsystems are. A generally mixed subsystem of m qudits is obtained by tracing over the other N−m qudits. We examine the entanglement in this mixed space of m qudits. We show that for a typical pure state of N qudits, its subsystems smaller than N/3...
متن کاملar X iv : q ua nt - p h / 06 05 23 2 v 1 29 M ay 2 00 6 Propagation of spatially entangled qudits through free space
We show the propagation of entangled states of high-dimensional quantum systems. The qudits states were generated using the transverse correlation of the twin photons produced by spontaneous parametric down-conversion. Their free-space distribution was performed at the laboratory scale and the propagated states maintained a high-fidelity with their original form. The use of entangled qudits all...
متن کاملQuantum Teleportation between Multiparties
The paper presents general protocols for quantum teleportation between multiparties. It is shown how N parties can teleport N unknown quantum states to M other parties with the use of M N + qudits in the maximally entangled state. It is also shown that a single pair of qudits in the maximally entangled state can be used to teleport two qudits in opposite directions simultaneously. PACS number(s...
متن کاملMany-to-one remote information concentration for qudits and multipartite entanglement
Telecloning and its reverse process, referred to as remote information concentration (RIC), have attracted considerable interest because of their potential applications in quantum-information processing. We here present a general scheme for RIC in d-level systems (qudits), in which the quantum information initially distributed in many spatially separated qudits can be remotely and deterministic...
متن کاملAll - resonant control of superconducting resonator qudits 1
Submitted for the MAR12 Meeting of The American Physical Society All-resonant control of superconducting resonator qudits1 FREDERICK STRAUCH, Williams College — Quantum information processing with using superpositions of Fock states in superconducting resonators holds great promise for multi-level (i.e. qudit) quantum logic. Previous theoretical work has shown that a combination of dispersive a...
متن کامل