![]() ![]() This, Einstein argued, almost certainly had to be wrong. Altering the state of one of them should instantly alter the state of the second, with the change seemingly occurring faster than light could possibly travel between the two objects. ![]() If quantum mechanics were right, then a pair of entangled objects would behave as a single quantum system no matter how far apart the objects were. Getting real about realismĪlbert Einstein was famously uneasy with some of the consequences of quantum entanglement. And the hardware setup may be essential for future quantum computing efforts. Because the qubits are so easy to control, the experiment provides a new precision to these sorts of measurements. And it did so by cooling a 30-meter-long aluminum wire to just a few milliKelvin. The experiment wasn't the first to show that local realism isn't how the Universe works-it's not even the first to do so with qubits.īut it's the first to separate the qubits by enough distance to ensure that light isn't fast enough to travel between them while measurements are made. ![]() ETH Zurich / Daniel Winkler reader comments 153 withĪ new experiment uses superconducting qubits to demonstrate that quantum mechanics violates what's called local realism by allowing two objects to behave as a single quantum system no matter how large the separation between them. ![]()
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