搜索结果: 16-30 共查到“物理学 Coherence”相关记录46条 . 查询时间(0.405 秒)
Isoscalar dipole coherence at low energies and forbidden E1 strength
Isoscalar dipole coherence low energies forbidden E1 strength
2011/1/6
In 16O and 40Ca an isoscalar, low-energy dipole transition (IS-LED) exhausting approximately
4% of the isoscalar dipole (ISD) energy-weighted sum rule is experimentally known, but conspicuously absen...
On-demand control of photon echoes far exceeding the spin coherence constraint via coherence swapping between optical and spin transitions
On-demand control photon echoes spin coherence constraint optical spin transitions
2010/11/8
Using on-demand coherence conversion via optical locking in conventional stimulated (three-pulse) photon echoes, ultralong, ultraefficient photon storage has been observed in a rare-earth Pr3+ doped Y...
Non-Markovian Entanglement Sudden Death and Rebirth of a Two-Qubit System in the Presence of System-Bath Coherence
Non-Markovian Entanglement Sudden Death Rebirth Two-Qubit System the Presence System-Bath Coherence
2010/11/5
We present a detailed study of the entanglement dynamics of a two-qubit system coupled to independent non-Markovian environments, employing hierarchy equations. This recently developed theoretical tre...
Intrinsic coherence dynamics and phase localization in Aharonov-Bohm Interferometers
Intrinsic coherence dynamics phase localization Aharonov-Bohm Interferometers
2010/11/11
The nonequilibrium real-time dynamics of electron coherence is explored in the quantum transport through the double-dot Aharonov-Bohm interferometers. We solve the exact master equation to find the ex...
Quantum interference in a four-level system of a $^{87}\mathrm{Rb}$ atom: Effects of spontaneously generated coherence
interference spontaneously generated coherence
2010/10/29
In this work, the effects of quantum interference and spontaneously generated coherence (SGC) are theoretically analyzed in a four level system of a $^{87}\mathrm{Rb}$ atom. For the effects of SGC, we...
Entanglement created by spontaneously generated coherence
Entanglement created spontaneously generated coherence
2010/10/29
We propose a scheme able to generate on demand a steady state entanglement between two non-degenerate cavity modes. The scheme relies on the interaction of the cavity modes with an ensemble of driven ...
Temporal coherence length of light in semiclassical field theory models
Temporal coherence length light semiclassical field theory models
2010/10/29
The following work is motivated by the conceptual problems associated with the wave-particle duality and the notion of the photon. Two simple classical models for radiation from individual emitters ar...
We report the creation of large Schr¨odinger-Cat states with up to 14 qubits. By investigating
their coherence over time, we observe a decay proportional to the square of the number of qubits.The obs...
Limits on Preserving Quantum Coherence using Multi-Pulse Control
Limits Preserving Quantum Coherence Multi-Pulse Control
2010/10/19
We explore the physical limits of pulsed dynamical decoupling methods for decoherence control
as determined by finite timing resources. By focusing on a decohering qubit controlled by arbitrary seque...
Coherence properties of a single dipole emitter in diamond
Coherence properties single dipole emitter diamond
2010/10/19
On-demand, high repetition rate sources of indistinguishable, polarised single photons are the key component for future photonic quantum technologies [1].Colour centres in diamond offer a promising so...
Phosphorus Spin Coherence Times in Silicon at Very Low Temperatures
magnetic resonance donor spins in silicon quantum computing
2010/10/27
Phosphorus donor spin coherence in isotopically pure 28 silicon is measured at very low temperatures using pulsed electron spin resonance. The isolated spin T2 varies unexpectedly with phosphorus conc...
Full-Field Optical Coherence Tomography Based on Hilbert Transform
Full-field optical coherence tomography (FF-OCT) Phase shifting interferometry (PSI) Hilbert transform
2009/6/2
Novel image restoration technique suitable for parallel detection in full-field optical coherence tomography (FF-OCT) is introduced. An en-face information of a sample can be demodulated from only two...
Observation of prolonged coherence time of the collective spin wave of atomic ensemble in a paraffin coated Rb vapor cell
prolonged coherence collective spin wave atomic paraffin coated Rb vapor cell
2010/4/9
We report a prolonged coherence time of the collective spin wave of a thermal 87Rb atomic ensemble in a paraffin coated cell. The spin wave is prepared through a stimulated Raman Process. The long coh...
Ultralong trapping of light using double spin coherence gratings
Ultralong light double spin coherence gratings
2010/4/8
Ultralong trapping of light has been observed in an optically dense three-level solid medium interacting with a pair of counterpropagating coupling fields. Unlike the light trapping based on standing-...
Coherence and control of quantum registers based on electronic spin in a nuclear spin bath
Coherence quantum registers electronic spin nuclear spin bath
2010/4/7
We consider a protocol for the control of few-qubit registers comprising one electronic spin embedded in a nuclear spin bath. We show how to isolate a few proximal nuclear spins from the rest of the e...