# Continuous and pulsed quantum zeno effect.

@article{Streed2006ContinuousAP, title={Continuous and pulsed quantum zeno effect.}, author={Erik W. Streed and Jongchul Mun and Micah Boyd and G K Campbell and Patrick Medley and Wolfgang Ketterle and David E. Pritchard}, journal={Physical review letters}, year={2006}, volume={97 26}, pages={ 260402 } }

Continuous and pulsed quantum Zeno effects were observed using a 87Rb Bose-Einstein condensate. Oscillations between two ground hyperfine states of a magnetically trapped condensate, externally driven at a transition rate omega(R), were suppressed by destructively measuring the population in one of the states with resonant light. The suppression of the transition rate in the two-level system was quantified for pulsed measurements with a time interval deltat between pulses and continuous…

## 124 Citations

Generalized relation between pulsed and continuous measurements in the quantum Zeno effect

- Physics
- 2008

A relation is found between pulsed measurements of the excited-state probability of a two-level atom illuminated by a driving laser and a continuous measurement by a second laser coupling the excited…

Quantum Zeno Effect assisted Spectroscopy of a single trapped Ion

- Medicine, PhysicsScientific Reports
- 2018

Direct frequency comb spectroscopy is demonstrated using the minute power of a single mode to drive a dipole allowed transition in a single trapped ion and demonstrates that the simple instantaneous quantum collapse description of the QZE can not be applied here.

Quantum Zeno and anti-Zeno effects measured by transition probabilities

- Physics
- 2013

Using numerical calculations, we compare the transition probabilities of many spins in random magnetic fields, subject to either frequent projective measurements, frequent phase modulations, or a mix…

Observation of quantum Zeno effect in a superconducting flux qubit

- Physics
- 2015

When a quantum state is subjected to frequent measurements, the time evolution of the quantum state is frozen. This is called the quantum Zeno effect. Here, we observe such an effect by performing…

Quantum Zeno effect in the strong measurement regime of circuit quantum electrodynamics

- Physics, Mathematics
- 2015

We observe the quantum Zeno effect -- where the act of measurement slows the rate of quantum state transitions -- in a superconducting qubit using linear circuit quantum electrodynamics readout and a…

Quantum Zeno effect in self-sustaining systems: Suppressing phase diffusion via repeated measurements

- Physics
- 2021

We study the effect of frequent projective measurements on the dynamics of quantum selfsustaining systems, by considering the prototypical example of the quantum Van der Pol oscillator. Quantum…

Incoherent Qubit Control Using the Quantum Zeno Effect.

- Physics, MedicinePhysical review letters
- 2018

The dynamical measurement operator technique offers a new tool for numerous forms of quantum feedback protocols, including adaptive measurements and rapid state purification, by providing a built-in form of error detection.

Criterion for quantum Zeno and anti-Zeno effects

- Physics, MathematicsPhysical Review A
- 2018

In this work, we study the decay behavior of a two-level system under the competing influence of a dissipative environment and repetitive measurements. The sign of the second derivative of the…

Large-time limit of the quantum Zeno effect

- Physics, Mathematics
- 2017

If very frequent periodic measurements ascertain whether a quantum system is still in its initial state, its evolution is hindered. This peculiar phenomenon is called quantum Zeno effect. We…

Experimental Investigation of Quantum Decay at Short, Intermediate, and Long Times via Integrated Photonics.

- Physics, MedicinePhysical review letters
- 2019

By injecting coherent light states in the fabricated photonic structures and by measuring a small scattered fraction of such light with an unprecedented dynamic range, this work is able to experimentally observe not only the exponential decay regime, but also the quadratic Zeno region and the power-law decay at long evolution times.

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