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(PhysOrg.com) -- When generating entanglement between two objects, physicists typically try to minimize the objects’ interactions with the environment, since this interaction causes decoherence. But contrary to this thinking, scientists in a new study have experimentally demonstrated that dissipation caused by interaction with the environment can continuously generate entanglement between two macroscopic objects (two ensembles of cesium atoms containing about 1 trillion atoms all together).

After an echolocating bat locks on to an insect with its sonar beam, it can keep track of its prey despite receiving a slew of echoes from other objects--leaves, vines and so on. How does it separate echoes bouncing off its target from echoes bouncing off the surrounding clutter, especially when the echoes reach the bat at the same time?