# Schrödinger cat states prepared by Bloch oscillation in a spin-dependent optical lattice

@article{Wu2011SchrdingerCS, title={Schr{\"o}dinger cat states prepared by Bloch oscillation in a spin-dependent optical lattice}, author={Bao-Jiang Wu and J. M. Zhang}, journal={Science China Physics, Mechanics and Astronomy}, year={2011}, volume={56}, pages={1810-1814} }

We propose to use Bloch oscillation of ultra-cold atoms in a spin-dependent optical lattice to prepare Schrödinger cat states. Depending on its internal state, an atom feels different periodic potentials and thus has different energy band structures for its center-of-mass motion. Consequently, under the same gravity force, the wave packets associated with different internal states perform Bloch oscillation of different amplitudes in space and in particular they can be macroscopically displaced…

## One Citation

### Creating cat states in one-dimensional quantum walks using delocalized initial states

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- 2016

Cat states are coherent quantum superpositions of macroscopically distinct states and are useful for understanding the boundary between the classical and the quantum world. Due to their macroscopic…

## References

SHOWING 1-10 OF 28 REFERENCES

### A “Schrödinger Cat” Superposition State of an Atom

- PhysicsScience
- 1996

A “Schrödinger cat''-like state of matter was generated at the single atom level by application of a sequence of laser pulses, which entangles internal and external states of the ion.

### Bloch oscillations of a Bose-Einstein condensate in a subwavelength optical lattice

- Physics
- 2009

We report on experiments studying the transport properties of an atomic Bose-Einstein condensate in an optical lattice of spatial period $\ensuremath{\lambda}∕2n$, where $n$ is an integer, realized…

### Coherent transport of neutral atoms in spin-dependent optical lattice potentials.

- PhysicsPhysical review letters
- 2003

The controlled coherent transport and splitting of atomic wave packets in spin-dependent optical lattice potentials are demonstrated and open intriguing possibilities for quantum state engineering of many body states.

### Bloch Oscillations of Atoms in an Optical Potential

- PhysicsEQEC'96. 1996 European Quantum Electronic Conference
- 1996

Ultracold cesium atoms are prepared in the ground energy band of the potential induced by an optical standing wave and the momentum distribution of Bloch states and effective masses different from the mass of the free atom is measured.

### Control of interaction-induced dephasing of Bloch oscillations.

- PhysicsPhysical review letters
- 2008

Control of interaction-induced dephasing of Bloch oscillations for an atomic Bose-Einstein condensate in an optical lattice is reported on, allowing for a BEC-based atom interferometer in the noninteracting limit.

### Directed coherent transport due to the Bloch oscillation in two dimensions

- Physics
- 2010

We point out that in higher dimensions, in contrast to the one-dimensional case considered usually, Bloch oscillation driven by a static force can induce transport of the wave packet. The wave packet…

### Long-lived BLOCH oscillations with bosonic sr atoms and application to gravity measurement at the micrometer scale.

- PhysicsPhysical review letters
- 2006

The observation of Bloch oscillations on the unprecedented time scale of several seconds is reported on, a challenge in physics for studies of surfaces, Casimir effects, and searches for deviations from Newtonian gravity predicted by theories beyond the standard model.

### Inducing transport in a dissipation-free lattice with super Bloch oscillations.

- PhysicsPhysical review letters
- 2010

It is shown that giant center-of-mass oscillations in position space with a displacement across hundreds of lattice sites when a periodic modulation to the force near the Bloch frequency provide a means to induce linear transport in a dissipation-free lattice.

### Bloch oscillations and Zener tunneling in two-dimensional photonic lattices.

- PhysicsPhysical review letters
- 2006

The first experimental observation of photonic Bloch oscillations and Zener tunneling in two-dimensional periodic systems in a square lattice superimposed on a refractive index ramp is reported on.

### Quantum superposition of distinct macroscopic states

- PhysicsNature
- 2000

Experimental evidence is presented that a superconducting quantum interference device (SQUID) can be put into a superposition of two magnetic-flux states: one corresponding to a few microamperes of current flowing clockwise, the other corresponding to the same amount ofCurrent flowing anticlockwise.