Browsing by Author "Glauber, Roy"
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Coherent Radiation by a Spherical Medium of Resonant Atoms
Prasad, Sudhakar; Glauber, Roy J. (American Physical Society, 2010)Radiation by the atoms of a resonant medium is a cooperative process in which the medium participates as a whole. In two previous papers we treated this problem for the case of a medium having slab geometry, which, under ... 
Cooperative Emission of Light Quanta: A Theory of Coherent Radiation Damping
Glauber, Roy J. (2009)A quantum emitted by any of a collection of identical atoms may be absorbed and reemitted by other atoms many times before it eventually emerges. The radiation process is thus best described as collective or cooperative ... 
Counting of fermions and spins in strongly correlated systems in and out of thermal equilibrium
Braungardt, Sibylle; Rodríguez, Mirta; Sen(De), Aditi; Sen, Ujjwal; Glauber, Roy J.; Lewenstein, Maciej (American Physical Society (APS), 2011)Atom counting theory can be used to study the role of thermal noise in quantum phase transitions and to monitor the dynamics of a quantum system. We illustrate this for a strongly correlated fermionic system, which is ... 
Density Operators and Quasiprobability Distributions
Cahill, K. E.; Glauber, Roy J. (American Physical Society (APS), 1969)The problem of expanding a density operator ρ in forms that simplify the evaluation of important classes of quantummechanical expectation values is studied. The weight function P ( α ) of the P representation, the Wigner ... 
Fermion and spin counting in strongly correlated systems
Braungardt, Sibylle; Sen(De), Aditi; Sen, Ujjwal; Glauber, Roy J.; Lewenstein, Maciej (American Physical Society (APS), 2008)We apply the atom counting theory to strongly correlated Fermi systems and spin models, which can be realized with ultracold atoms. The counting distributions are typically subPoissonian and remain smooth at quantum phase ... 
Fermion and SpinCounting in Strongly Correlated Systems
Braungardt, Sibylle; De, Aditi; Sen, Ujjwal; Glauber, Roy J.; Lewenstein, Maciej (American Physical Society, 2008)We apply the atom counting theory to strongly correlated Fermi systems and spin models, which can be realized with ultracold atoms. The counting distributions are typically subPoissonian and remain smooth at quantum phase ... 
Field fluctuations measured by interferometry
Glauber, Roy J.; Orozco, L A; Vogel, K; Schleich, W P; Walther, H (IOP Publishing, 2010)We derive the complete photon count statistics of an interferometer based on two beam splitters. As a special case we consider a joint intensity–electric field measurement. Our approach is based on the transformation ... 
Nobel Lecture: One hundred years of light quanta
Glauber, Roy J. (American Physical Society (APS), 2006) 
One Hundred Years of Light Quanta (Nobel Lecture)
Glauber, Roy (Wiley, 20060811) 
Ordered Expansions in Boson Amplitude Operators
Cahill, K. E.; Glauber, Roy J. (American Physical Society (APS), 1969)The expansion of operators as ordered power series in the annihilation and creation operators a and a † is examined. It is found that normally ordered power series exist and converge quite generally, but that for the case ... 
Particlecounting statistics of time and spacedependent fields
Braungardt, Sibylle; Rodríguez, Mirta; Glauber, Roy J.; Lewenstein, Maciej (American Physical Society (APS), 2012)The counting statistics give insight into the properties of quantum states of light and other quantum states of matter such as ultracold atoms or electrons. The theoretical description of photon counting was derived in the ... 
The Quantum Theory of Optical Coherence
Glauber, Roy J. (American Physical Society (APS), 1963)The concept of coherence which has conventionally been used in optics is found to be inadequate to the needs of recently opened areas of experiment. To provide a fuller discussion of coherence, a succession of correlation ...