Coherence and Partial Coherence in Interacting Electron Systems
نویسندگان
چکیده
منابع مشابه
Coherence and partial coherence in interacting electron systems.
We study coherence of electron transport through interacting quantum dots and discuss the relation of the coherent part to the flux-sensitive conductance for three different types of Aharonov-Bohm interferometers. Contributions to transport in first and second order in the intrinsic linewidth of the dot levels are addressed in detail. We predict an asymmetry of the interference signal around re...
متن کاملDuality between partial coherence and partial entanglement
Entangled-photon pairs ~biphotons! generated by spontaneous optical parametric down-conversion exhibit a number of properties that are analogous to those of ordinary photons generated by incoherent sources. The spatial pump-field distribution and the two-particle wave function in the biphoton case play the respective roles of the source intensity distribution and the second-order coherence func...
متن کاملIntegrability and coherence of hopping between 1D correlated electron systems.
We present numerical evidence that the hopping of electrons between chains described by the t − J model is coherent in the integrable cases (J = 0 and J = 2) and essentially incoherent otherwise. This effect is not related to the value of the exponent α, (which is restricted to the interval [0,1/8] when 0 ≤ J ≤ 2), and we propose that enhanced coherence is characteristic of integrable systems. ...
متن کاملLinear algebraic theory of partial coherence: discrete fields and measures of partial coherence.
A linear algebraic theory of partial coherence is presented that allows precise mathematical definitions of concepts such as coherence and incoherence. This not only provides new perspectives and insights but also allows us to employ the conceptual and algebraic tools of linear algebra in applications. We define several scalar measures of the degree of partial coherence of an optical field that...
متن کاملCoherence in amalgamated algebra along an ideal
Let $f: Arightarrow B$ be a ring homomorphism and let $J$ be an ideal of $B$. In this paper, we investigate the transfer of the property of coherence to the amalgamation $Abowtie^{f}J$. We provide necessary and sufficient conditions for $Abowtie^{f}J$ to be a coherent ring.
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Physical Review Letters
سال: 2001
ISSN: 0031-9007,1079-7114
DOI: 10.1103/physrevlett.86.3855