谷歌新芯片解決量子計算挑戰!

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谷歌宣佈成功破解量子計算挑戰,推出新晶片

加州聖巴巴拉(路透社) – 谷歌於週一表示,該公司已經克服了量子計算的一個關鍵挑戰,推出了新一代晶片,成功在五分鐘內解決了一個計算問題,而這個問題如果由傳統計算機處理,所需的時間將比宇宙的歷史還要長。

與其他科技巨頭如微軟和IBM一樣,谷歌正積極追求量子計算,因為這項技術承諾能提供比當今最快系統快得多的計算速度。雖然谷歌在加州聖巴巴拉的量子實驗室所解決的數學問題目前並沒有商業應用,但谷歌希望未來的量子計算機能解決當前計算機無法處理的醫療、電池化學和人工智能等問題。

週一公布的結果來自一款名為「Willow」的新晶片,該晶片擁有105個「量子比特」(qubits),這是量子計算機的基本構建單位。量子比特雖然運行速度快,但容易出錯,因為它們可能會受到來自外太空的微小亞原子粒子的擾動。

隨著越來越多的量子比特被集成到晶片中,這些錯誤會累積,使晶片的性能不如傳統計算機。因此,自1990年代以來,科學家們一直在研究量子錯誤修正技術。

谷歌在週一於《自然》期刊上發表的一篇論文中表示,他們找到了一種方法,可以將Willow晶片的量子比特串聯起來,從而使錯誤率隨著量子比特數量的增加而下降。該公司還表示,能夠實時修正錯誤,這是使量子計算機變得實用的一個關鍵步驟。

谷歌量子AI部門負責人哈特穆特·內文在一次訪談中表示:「我們已經超過了盈虧平衡點。」

2019年,IBM挑戰了谷歌的聲明,稱谷歌的量子晶片解決了一個傳統計算機需要一萬年才能完成的問題,而使用不同的技術假設,該問題在兩天半內就可以解決。

谷歌在週一的博客中提到,他們在最新的估算中考慮了一些這些擔憂。即使在最理想的情況下,谷歌表示,傳統計算機仍需十億年才能達到其最新晶片的相同結果。

一些谷歌的競爭對手正在生產擁有更多量子比特的晶片,但谷歌專注於製造最可靠的量子比特,谷歌量子AI首席架構師安東尼·梅格蘭表示。

谷歌之前的晶片是在加州大學聖巴巴拉分校的共享設施中製造的,但現在已經建設了自己的專用製造設施來生產Willow晶片。梅格蘭表示,這一新設施將加快谷歌未來晶片的製造速度,這些晶片在實驗中需要在名為冷卻器的巨大冰箱中進行冷卻。

梅格蘭表示:「如果我們有一個好主意,我們希望團隊中的某個人能夠將它迅速帶入無塵室並放入這些冷卻器,這樣我們就能進行多次學習循環。」

這項技術的突破不僅對於科技行業有著深遠的影響,也可能改變未來的計算方式。隨著量子計算的發展,未來我們可能會看到在醫療、能源及人工智能等領域的重大進展,這些都是傳統計算機無法觸及的領域。然而,谷歌的挑戰在於如何持續提高量子比特的穩定性和可靠性,以便在實際應用中發揮其潛力。這一進展不僅是谷歌的勝利,也是整個量子計算領域的一個重要里程碑。

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