# Quantum tunneling time

@article{Davies2004QuantumTT, title={Quantum tunneling time}, author={Paul C. W. Davies}, journal={American Journal of Physics}, year={2004}, volume={73}, pages={23-27} }

A simple model of a quantum clock is applied to the old and controversial problem of how long a particle takes to tunnel through a quantum barrier. The model has the advantage of yielding sensible results for energy eigenstates and does not require the use of time-dependent wave packets. Although the treatment does not forbid superluminal tunneling velocities, there is no implication of faster-than-light signaling because only the transit duration is measurable, not the absolute time of transit…

## 49 Citations

### Anatomy of Quantum Tunneling

- Physics
- 2014

We use complex classical solutions to provide a simple and transparent treatment of quantum tunneling. We show that the imaginary part of the tunneling coordinate may be weakly measured, and that it…

### On the status of quantum tunnelling time

- PhysicsEuropean Journal for Philosophy of Science
- 2022

How long does a quantum particle take to traverse a classically forbidden energy barrier? In other words, what is the correct expression for quantum tunnelling time? This seemingly simple question…

### Quantum Tunneling Time: Relativistic Extensions

- Physics
- 2013

Several years ago, in quantum mechanics, Davies proposed a method to calculate particle’s traveling time with the phase difference of wave function. The method is convenient for calculating the…

### Aharonov-Bohm effect in the tunnelling of a quantum rotor in a linear Paul trap.

- PhysicsNature communications
- 2014

It is demonstrated that the charged particles in this quantum Tunnelling system are coupled to the vector potential of a magnetic field throughout the entire process, even during quantum tunnelling, as indicated by the manifestation of the Aharonov-Bohm effect in this system.

### Existence and nonexistence of an intrinsic tunneling time

- Physics
- 2009

Using a time operator, we define a tunneling time for a particle going through a barrier. This tunneling time is the average of the phase time introduced by other authors. In addition to the delay…

### Simulations in quantum tunneling

- Physics
- 2017

We study the timing effects of nonrelativistic wave packet tunneling through a barrier using a numerical simulation readily accessible to an undergraduate audience. We demonstrate that the peak of…

### Scattering a quantum particle on the potential step: Characteristic times for transmission and reflection

- Mathematics
- 2013

We present a new model of scattering a quantum particle on the potential step, which reconstructs the prehistory of the subensembles of transmitted and reflected particles by their final states.…

### Barrier interaction time and the Salecker-Wigner quantum clock: Wave-packet approach

- Physics
- 2009

The time-of-flight measurement approach of Peres based on the Salecker-Wigner quantum clock is applied to the one-dimensional scattering of a wave packet from a rectangular barrier. By directly…

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