Interacting Cold Rydberg Atoms: a Toy Many-Body
... One of the first observation of the interaction between Rydberg atoms was reported in 1981 by J.-M. Raimond and co-workers [5]. The authors used a dense thermal beam of cesium (density ≥ 1013 at/cm3 ) at 300 K and excited the atoms to the Rydberg states with 10 ns-pulsed laser. They observed a broad ...
... One of the first observation of the interaction between Rydberg atoms was reported in 1981 by J.-M. Raimond and co-workers [5]. The authors used a dense thermal beam of cesium (density ≥ 1013 at/cm3 ) at 300 K and excited the atoms to the Rydberg states with 10 ns-pulsed laser. They observed a broad ...
Twenty years of the Weyl anomaly
... This was the road to Damascus for Steve as far as Weyl anomalies were concerned an4 like many a recent convert, he went on to become their most ardent advocatet. This was also the beginning of a very fruitful collaboration between the two of us. The significance of my paper with Deser and Isham was ...
... This was the road to Damascus for Steve as far as Weyl anomalies were concerned an4 like many a recent convert, he went on to become their most ardent advocatet. This was also the beginning of a very fruitful collaboration between the two of us. The significance of my paper with Deser and Isham was ...
Helium atom - ChaosBook.org
... in this chapter that the concepts of symbolic dynamics, unstable periodic orbits, and cycle expansions are essential tools to understand and calculate classical and quantum mechanical properties of nothing less than the helium, a dreaded threebody Coulomb problem. This sounds almost like one step to ...
... in this chapter that the concepts of symbolic dynamics, unstable periodic orbits, and cycle expansions are essential tools to understand and calculate classical and quantum mechanical properties of nothing less than the helium, a dreaded threebody Coulomb problem. This sounds almost like one step to ...
Quantum Fingerprints that Keep Secrets
... In the context of this work the meaning of (classical) fingerprints is as follows. Given a binary string x of length n, we want to efficiently produce its “partial description” by d bits, typically with d ≪ n, such that given only the description of x and any y ∈ {0, 1}n one can test, with high accu ...
... In the context of this work the meaning of (classical) fingerprints is as follows. Given a binary string x of length n, we want to efficiently produce its “partial description” by d bits, typically with d ≪ n, such that given only the description of x and any y ∈ {0, 1}n one can test, with high accu ...
MOCK MODULAR FORMS AND QUANTUM MODULAR FORMS 1
... Moreover, Ramanujan claimed this collection must have size larger than one. In his 2001 PhD thesis, Zwegers showed that the mock theta functions are the holomorphic part of a harmonic Maass form. We prove there must exist such a collection by establishing a more general result for all holomorphic pa ...
... Moreover, Ramanujan claimed this collection must have size larger than one. In his 2001 PhD thesis, Zwegers showed that the mock theta functions are the holomorphic part of a harmonic Maass form. We prove there must exist such a collection by establishing a more general result for all holomorphic pa ...
Superconducting Qubits and the Physics of Josephson Junctions
... area junctions[7] with EJ ∼ 10EC , producing a large width in the δb wavefunction and relaxing the requirement of close tuning of L with LJ0 . Another method is to make the qubit junction a two-junction SQUID, whose critical current can then be tuned via a second flux-bias circuit[14, 15]. Larger ju ...
... area junctions[7] with EJ ∼ 10EC , producing a large width in the δb wavefunction and relaxing the requirement of close tuning of L with LJ0 . Another method is to make the qubit junction a two-junction SQUID, whose critical current can then be tuned via a second flux-bias circuit[14, 15]. Larger ju ...
Quantum teleportation
Quantum teleportation is a process by which quantum information (e.g. the exact state of an atom or photon) can be transmitted (exactly, in principle) from one location to another, with the help of classical communication and previously shared quantum entanglement between the sending and receiving location. Because it depends on classical communication, which can proceed no faster than the speed of light, it cannot be used for faster-than-light transport or communication of classical bits. It also cannot be used to make copies of a system, as this violates the no-cloning theorem. While it has proven possible to teleport one or more qubits of information between two (entangled) atoms, this has not yet been achieved between molecules or anything larger.Although the name is inspired by the teleportation commonly used in fiction, there is no relationship outside the name, because quantum teleportation concerns only the transfer of information. Quantum teleportation is not a form of transportation, but of communication; it provides a way of transporting a qubit from one location to another, without having to move a physical particle along with it.The seminal paper first expounding the idea was published by C. H. Bennett, G. Brassard, C. Crépeau, R. Jozsa, A. Peres and W. K. Wootters in 1993. Since then, quantum teleportation was first realized with single photons and later demonstrated with various material systems such as atoms, ions, electrons and superconducting circuits. The record distance for quantum teleportation is 143 km (89 mi).