Niels Dupont

Fragmentation of an interacting Bose gas refers to the macroscopic occupation of a finite set of single-particle eigenstates. This phenomenon is related to the notion of particle-number squeezing in quantum optics, an exquisite property of quantum states that can offer metrological gain. So far, fragmentation has only been partially achieved in experiments involving a large number $N$ of bosons in few modes. Here, we introduce a practical and efficient scheme to prepare fragmented states in systems realizing the $L$-mode Bose-Hubbard model. We demonstrate how a large energy detuning between the modes can be used as a practical control parameter to successfully fragment a Bose gas over an extremely short preparation time. Applying an optimal-control approach within realistic experimental constraints, we obtain total fragmentation at a high filling factor, realizing $\ket{N/L,...,N/L}$ Fock states with hundreds of bosons in very few modes over a few tunneling times.

and Blautia (P = 0.008) significantly decreased on day 20 and C. hiranonis (p = 0.001) on day 60.Blautia (P = 0.017) remained decreased on day 60.E.coli remained unchanged on day 20 (P = 0.999) but decreased on day 60 (P = 0.0001).Faecalibacterium remained unchanged on day 20 (P = 0.711) but increased on day 60 (P = 0.0002).In group 3, no statistically significant differences were identified.Administration of amoxicillin/clavulanic acid or doxycycline had profound effects on certain bacterial groups potentially associated with dysbiosis in these kittens.

We investigate the production of s-wave scattering halos from collisions between the momentum components of a Bose-Einstein condensate released from an optical lattice. The lattice periodicity translates in a momentum comb responsible for the quantization of the halos' radii. We report on the engineering of those halos through the precise control of the atom dynamics in the lattice: we are able to specifically enhance collision processes with given center-of-mass and relative momenta. In particular, we observe quantized collision halos between opposite momenta components of increasing magnitude, up to 6 times the characteristic momentum scale of the lattice.

In order to check the degradation of speed and regularity of bus service, the team of the Bus Department in charge of studies on traffic is offering a whole range of means, from the reserved lane to the right-of-way, including crossroads equipment or regulatory actions. These fittings are financed by sources external to the RATP, thanks to complex procedure which requires successive negotiation meetings.

RESERVED LANES SIGNAL PRIORITY WIDENING SIDEWALKS AT BUS STOP SITESTRAFFIC ENGINEERING MEASURES IMPROVING OVERALL CIRCULATION WITH IMPACT ON BUSES