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Saikat Guha

from Cambridge, MA
Age ~44
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Related to:
Arunaksha GuhaMoumita Guha
Connected to:
Kishor A Guha, 51Malika Guha, 52Mita L Guha, 63Payal Guha, 46Pratibha Guha, 42Ratul K Guha, 44Rumki Guha, 57Saptarshi Guha, 45Shekhar Guha, 69Somnath Guha, 48

Saikat Guha Phones & Addresses

  • Cambridge, MA
  • Tucson, AZ
  • 69 Everett St, Everett, MA 02149 (617) 294-0637

Work

Company: Raytheon bbn technologies Jul 2008 Address: Cambridge, MA Position: Senior scientist

Education

Degree: S.M., Ph.D. School / High School: Massachusetts Institute of Technology 2002 to 2008 Specialities: Electrical Engineering and Computer Science

Skills

Technology

Industries

Research

Resumes

Resumes

Saikat Guha Photo 1

Associate Professor

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Location:
Cambridge, MA
Industry:
Research
Work:
Raytheon BBN Technologies - Cambridge, MA since Jul 2008
Senior Scientist
Education:
Massachusetts Institute of Technology 2002 - 2008
S.M., Ph.D., Electrical Engineering and Computer Science Indian Institute of Technology, Kanpur 1998 - 2002
Bachelor of Technology, Electrical Engineering St. Michael's High School 1986 - 1998
Skills:
Technology

Publications

Us Patents

Holevo Capacity Achieving Joint Detection Receiver

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US Patent:
8620166, Dec 31, 2013
Filed:
Nov 30, 2011
Appl. No.:
13/307439
Inventors:
Saikat Guha - Everett MA, US
Assignee:
Raytheon BBN Technologies Corp. - Cambridge MA
International Classification:
H04B 10/60
US Classification:
398207, 398209, 398210
Abstract:
An optical receiver may include a unitary transformation operator to receive an n-symbol optical codeword associated with a codebook, and to perform a unitary transformation on the received optical codeword to generate a transformed optical codeword, where the unitary transformation is based on the codebook. The optical receiver may further include n optical detectors, where a particular one of the n optical detectors is to detect a particular optical symbol of the transformed optical codeword, and to determine whether the particular optical symbol corresponds to a first optical symbol or a second optical symbol. The optical receiver may also include a decoder to construct a codeword based on the determinations, and to decode the constructed codeword into a message using the codebook. The optical receiver may attain superadditive capacity, and, with an optimal code, may attain the Holevo limit to reliable communication data rates.

Systems And Methods For Quantum Receivers For Target Detection Using A Quantum Optical Radar

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US Patent:
20100177297, Jul 15, 2010
Filed:
Nov 2, 2009
Appl. No.:
12/610739
Inventors:
Saikat Guha - Everett MA, US
Zachary Dutton - Cambridge MA, US
Assignee:
BBN Technologies Corp. - Cambridge MA
International Classification:
G01C 3/08
US Classification:
356 401
Abstract:
A quantum-illumination receiver is described comprising a phase-conjugation and mixing system for mixing and/or conjugating the idler beam from an entangled light transmitter and the return beam from the target to produce an output beam that is representative of the presence or absence of the target, a light beam collector for receiving a return light beam from the target region and directing the return light beam from a target region to the phase-conjugation and mixing system input, an optical input for receiving an idler light beam from a transmitter and directing the idler light beam from the transmitter to the phase-conjugation and mixing system, a sensor for measuring the output of the phase-conjugation and mixing system, and a processor to process the output of the sensor to make an determination about the presence of the target.

Holevo Capacity Achieving Joint Detection Receiver

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US Patent:
20130238951, Sep 12, 2013
Filed:
Apr 29, 2013
Appl. No.:
13/872857
Inventors:
Saikat GUHA - Cambridge MA, US
Assignee:
RAYTHEON BBN TECHNOLOGIES CORP. - Cambridge MA
International Classification:
H03M 13/05
US Classification:
714752
Abstract:
An optical receiver may include a unitary transformation operator to receive an n-symbol optical codeword associated with a codebook, and to perform a unitary transformation on the received optical codeword to generate a transformed optical codeword, where the unitary transformation is based on the codebook. The optical receiver may further include n optical detectors, where a particular one of the n optical detectors is to detect a particular optical symbol of the transformed optical codeword, and to determine whether the particular optical symbol corresponds to a first optical symbol or a second optical symbol. The optical receiver may also include a decoder to construct a codeword based on the determinations, and to decode the constructed codeword into a message using the codebook. The optical receiver may attain superadditive capacity, and, with an optimal code, may attain the Holevo limit to reliable communication data rates.

Boundless Reading Of Information Bits With A Single Photon

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US Patent:
20130292472, Nov 7, 2013
Filed:
May 4, 2012
Appl. No.:
13/464253
Inventors:
Saikat Guha - Everett MA, US
Assignee:
RAYTHEON BBN TECHNOLOGIES CORP. - Cambridge MA
International Classification:
G06K 7/14
US Classification:
235454
Abstract:
An optical imaging system includes a transmitter configured to generate spatially entangled quantum states of light to probe reflective targets, a target configured to reflect the spatially entangled quantum states of light and a receiver configured to receive and detect the spatially entangled quantum states of light, thereby decoding a message encoded in a memory.

Covert Sensor

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US Patent:
20180210071, Jul 26, 2018
Filed:
Jan 19, 2018
Appl. No.:
15/875904
Inventors:
- Cambridge MA, US
Saikat Guha - Cambridge MA, US
International Classification:
G01S 7/481
G01S 17/36
Abstract:
A system for covert sensing. A broadband light source is split into two portions, a first portion of which illuminates a target, and a second portion of which is frequency shifted, e.g., by an acousto-optic frequency shifter. Light reflected from the target is combined with the frequency shifted light, detected, and demodulated with an in-phase and quadrature demodulator. The outputs of the demodulator are filtered and the arc tangent of the ratio is calculated.

Optical Ising-Model Solver Using Quantum Annealing

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US Patent:
20170264373, Sep 14, 2017
Filed:
Feb 3, 2017
Appl. No.:
15/424563
Inventors:
- Cambridge MA, US
Saikat Guha - Cambridge MA, US
International Classification:
H04B 10/70
H04Q 11/00
H04B 10/2557
Abstract:
A method implemented by an optical circuit, including beam splitter, phase shifters and cross-phase modulators, for solving Ising-model using quantum annealing discretizes a continuous time-dependent Hamiltonian function over a time period T, into a plurality of smaller portions; implements each of said smaller portions with a non-linear optical medium, and iterates over said smaller portions to output a solution of the Ising Hamiltonian problem, using the optical components.

Holevo Capacity Achieving Joint Detection Receiver

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US Patent:
20160119170, Apr 28, 2016
Filed:
Dec 30, 2015
Appl. No.:
14/985099
Inventors:
- Cambridge MA, US
Saikat Guha - Cambridge MA, US
International Classification:
H04L 27/22
H04B 10/70
Abstract:
An optical receiver may include a unitary transformation operator to receive an n-symbol optical codeword associated with a codebook, and to perform a unitary transformation on the received optical codeword to generate a transformed optical codeword, where the unitary transformation is based on the codebook. The optical receiver may further include n optical detectors, where a particular one of the n optical detectors is to detect a particular optical symbol of the transformed optical codeword, and to determine whether the particular optical symbol corresponds to a first optical symbol or a second optical symbol. The optical receiver may also include a decoder to construct a codeword based on the determinations, and to decode the constructed codeword into a message using the codebook. The optical receiver may attain superadditive capacity, and, with an optimal code, may attain the Holevo limit to reliable communication data rates.

Device And Method For Optimally Distinguishing Among An Arbitrary Set Of Coherent States Of Light

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US Patent:
20140133001, May 15, 2014
Filed:
Oct 5, 2012
Appl. No.:
13/646228
Inventors:
RAYTHEON BBN TECHNOLOGIES CORP. - , US
Saikat Guha - Everett MA, US
Zachary Dutton - Arlington MA, US
Assignee:
RAYTHEON BBN TECHNOLOGIES CORP. - Cambridge MA
International Classification:
G06N 99/00
US Classification:
359107, 977933
Abstract:
A method and device for optimal processing of a plurality of sets of coherent states of lights. The method includes: receiving a light having a coherent state; splitting the coherent state into a plurality of identical states (slices), each a coherent state with lower intensity than that of the received coherent state; transferring the information of each of the identical coherent states into a qubit; compressing the quantum information of the qubit into a quantum memory; and quantum processing the quantum information from the quantum memory.
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Saikat Guha from Cambridge, MA, age ~44 Get Report