Thomas E Chapuran

8103172, Jan 24, 2012

Jun 19, 2009

12/487879

Nicholas A. Peters - Laurel MD, US
Thomas E. Chapuran - Hillsborough NJ, US
Robert Runser - Clarksville MD, US
Matthew S. Goodman - Ellicott City MD, US

Telcordia Technologies, Inc. - Piscataway NJ

H04B 10/02

398173, 398140, 398175

A distributed quantum relay architecture is disclosed. In one embodiment of this architecture, time and wavelength division multiplexing are used to enable a laser pump pulse, already used to create an initial entangled photon pair, to be distributed to a remote relay site, on the same optical fiber as a photon from that initial pair. At that remote site, the pump pulse is amplified and used to locally create the second entangled photon pair that is required for quantum teleportation. This embodiment enables the placement of quantum repeater stations at remote locations without complicated dedicated channels to distribute the pump or electronics. In addition, as lasers are generally among the most expensive components, a significant cost savings is gained, in this embodiment, by using only one pump laser instead of two (or more) as in previous quantum teleportation efforts.

8536508, Sep 17, 2013

Sep 2, 2010

12/874294

Nicholas A. Peters - Laurel MD, US
Thomas E. Chapuran - Hillsborough NJ, US

TT Government Solutions, Inc. - Basking Ridge NJ

H01J 40/14
G02B 26/02
G06E 3/00

250214R, 359107

A system and method is provided for a source for a heralded single photon comprising a correlated photon-pair generator that provides bursts of multiple photon pairs that may be odd or even in number of pairs, one of each pair having a first but not a second characteristic and the other of each pair having the second but not the first characteristic; a first optical path for photons of pairs having the first characteristic; a second optical path for photons of pairs having the second characteristic; a two-photon absorber in the first optical path that, for each burst of photons, reduces the number of first characteristic photons in the first path to zero or one, depending on whether the number of photon pairs in the burst is even or odd; a photon detector in the second path having a heralding signal output to indicate when the number of photons in the burst is odd; and an optical switch coupled to the output of the second optical path and connected to operate in response to the heralding signal.

20030012150, Jan 16, 2003

Jul 12, 2001

09/904069

Thomas Chapuran - Hillsborough NJ, US
Seshadri Mohan - Basking Ridge NJ, US

H04L012/16

370/271000, 370/487000

Processing of multimedia calls in a packet-based network builds on existing call model processing by maintaining the use of the basic call state models to control the overall two-party call and the use of connection views to associate multiple two-party calls and provide access to advanced supplementary services. Through the use of a multimedia view processor, the system separates multimedia connection handling from call handling. The basic call models are extended to support new messages and enhanced messages for creating, modifying, and deleting multimedia view objects and communicating modifications to the media streams between call state model processors and protocol specific processors.